Chandrayaan 3 - After The Landing What Happens Next?

[@lukebentley9993]

I work for a financial firm on a team with some members over in India. They were late for our meeting because they were all watching the landing. It was awesome hearing just how excited and proud they were.

[@nine4271]

There were big screensvin my office, everyone was watching I will never forget those moment. We very thrilled excited scared and finally super happy .

[@SpecialEDy]

Congratulations India, welcome to the Lunar Community! As an American, i wish you many more successful visits.

[@arunpatil5302]

Hereafter let's do it jointly 🙂

[@SpecialEDy]

@arunpatil5302 Indeed. Among the stars, we are all brothers and sisters from the same mother Earth. I don't care if it's Russia, India, Israel, China, or the US, a successful scientific mission to the moon is success for all humanity. In the words of Neil Armstrong, "That's one small step for man, one giant leap for all Mankind".

[@niladribanerjee2821]

​@@SpecialEDyunfortunately authoritarian govts don't think that way hence democracies should come together to cope with any problem.

[@SpecialEDy]

@niladribanerjee2821 True, but authoritarianism falls to democracy when the people demand it, and that happens by showing them freedom, kindness, and wealth. India has better quotes than the USA for this. "Be the change that you wish to see in the world", or "if you wish to experience peace, provide peace for another". Ghandi and the Dhali Lama respectively, who both have offered a wealth of wisdom on this subject. For us, two of JFK's speeches are excellent reads if you haven't read them before. "We choose to go to the Moon", obviously since we are speaking of India's success. Why did India visit the moon this week, the same reason as the USA did, and all countries chose to, "not because it is easy, but because it is hard. And JFK has another famous speech about how we consider our allies and adversaries abroad, referred to as "Ask Not What Your Country Can Do For You". Some excerpts: "To those old allies whose cultural and spiritual origins we share, we pledge the loyalty of faithful friends. United, there is little we cannot do in a host of cooperative ventures. Divided, there is little we can do - for we dare not meet a powerful challenge at odds and split asunder. To those new States whom we welcome to the ranks of the free, we pledge our word that one form of colonial control shall not have passed away merely to be replaced by a far more iron tyranny. We shall not always expect to find them supporting our view. But we shall always hope to find them strongly supporting their own freedom - and to remember that, in the past, those who foolishly sought power by riding the back of the tiger ended up inside. ... And so, my fellow Americans: ask not what your country can do for you - ask what you can do for your country. My fellow citizens of the world: ask not what America will do for you, but what together we can do for the freedom of man."

[@seabreeze_ra1859]

@@niladribanerjee2821 But the truth is that it's America refuse the coop with China.

[@AdrianoCasemiro]

They did so much with such a small budget that we all should watch and learn from ISRO. Well done, guys and gals!

[@nirbhayatiwari5425]

They can do because of various reasons .. It's not something special bro as in India it is common ..

[@avinashalapati2933]

The sad part is they are paid 1/5 of what NASA pays for its scientists yet they work with lot of national pride.

[@nathanieljames7462]

​@@nirbhayatiwari5425Seriously?

[@vikaschoudhary1]

@@nirbhayatiwari5425what the heck are you talking about, it’s a very big accomplishment

[@rickgolder6818]

@@vikaschoudhary1 well actually not, the current ISRO director have said that india is capable of doing other hard interplanetary missions and touchdowns, but they are currently binded by the Funds. The yearly funds, will increase in the future, and so as the capabilities of ISRO.

[@FrankRuiz66]

Congratulations to our friends in India on their huge accomplishment.

[@SuryadevaraRammurthyNaidu]

Wish everyone in the west is as friendly as you. 🤗 We don't like to make enemies 🧘‍♂️

[@JenniferA886]

@@SuryadevaraRammurthyNaidurespect to you 👍👍👍

[@cap-advaith]

Thanks man , much obliged

[@TukulParida]

😊

[@mikehipperson]

Accomplished with the aid from the British taxpayers!

[@IstasPumaNevada]

Congratulations again to the people of India, and all the engineers and programmers and machinists and assemblers and support crew and such whose talent, skill, and expertise made this possible.

[@SuryadevaraRammurthyNaidu]

Wish everyone in the west is as friendly as you. 🤗 We don't like to make enemies 🧘‍♂️

[@davidharrison3711]

The mission was sponsored by Tang........and Sizzler!

[@hinduswastika9754]

Thank you bro

[@sachinkumarparsai9077]

धन्यवाद

[@john-ic5pz]

no mention of the Indian tax payers who funded it? 😂

[@nigelwilliams7920]

Well done India! I liked the way the lander did two distinct pauses during the descent. It gave the impression that it was in no hurry to get to the surface, rather they gave the sensors and software plenty of time to get the best data and best solution.

[@abhishekpal7291]

You got it right mate. They made just the correct corrections in the algorithms and put the ability to hover and decide go or no go for a particular site. If it's no go then r lander moves sideways a little then checks again if that place is a go or no go fir landing. If it's gets confirmed fully then only it will land there. It's marvelous peace of engering and science achieved here

[@aditube8781]

Yea the HOVERING phases

[@gaydonaldtrump]

too bad it was faked

[@angelarch5352]

Congrats to India, I am so happy that they landed safely! And prove that they have a world (and moon:) class space program. We all look forward to their future amazing accomplishments!

[@sandymehta9031]

What a feat. Congratulations to the entire ISRO team for their "don't accept defeat" attitude. They are all pride of the nation

[@anshu_1601]

The level of cofidence displayed by ISRO is astounding....the timing of the landing and the live video of the actual landing was shared with the whole world...! The whole thing boosted the confidence level of every Indian, wherever he or she may be.

[@robertmiller9735]

They had reason to be confident: they put in the work.

[@frankschest8584]

Absolutely!

[@fallinginthed33p]

Well done ISRO, good to see another rover on another world

[@justinweatherford8129]

I’m surprised that nobody has named a rover K-9 yet.

[@zaeonnine0]

@@justinweatherford8129 It will happen someday, I'm sure 😆(bonus points if it is a quadrupedal walker like a robot dog)

[@anteshell]

@@justinweatherford8129 I'm not surprised. "K-9" as a term has pretty long history and established status as a name for military or law enforcement dog units. There's nothing like that linking it to anything space related. Using that name would essentially be shoehorning it in instead of using it organically and with valid reasoning.

[@DexScreenHer]

Toilets

[@OilyLagrunge]

​@@anteshellK-9 is a play on "canine". Rover is a stereotypical dog name. Just about every acronym in space exploration and generally astronomy is shoehorned for some kind of joke such as this.

[@hu9t]

This involves complex maneuvers, they navigated lander to South pole, very impressive!

[@nirbhayatiwari5425]

They did this before during Chandrayaan 2 but only they missed the landing .. And yes Spaceflight is always complex so there is nothing new ..

[@RajaRamMohanKaay]

​@@nirbhayatiwari5425they missed because of their over ambitions. If ISRO had increased the landing site from 500x500 meter to 2km x 1 km it was about to land safely.

[@Gaurav90065]

​@RajaRamMohanKaay 😂😂 now you are more qualified than those scientists

[@nirbhayatiwari5425]

@@Gaurav90065 Depends on the situation ...

[@nirbhayatiwari5425]

@@RajaRamMohanKaay Maybe

[@TheTamriel]

Rise and shine, India! ❤ Greetings from Argentina.

[@tp-li1wy]

The dancing videos is from the g20 space economy leader's meeting held in Bengaluru this year. I was there, it was amazing 😂 They moved chairs out to make space for the unexpectedly enthusiastic scientists 🔥

[@gautamvaze1101]

That sounds like a great time. What were they dancing to?

[@Django0324]

​@@gautamvaze1101music

[@atharvzemse6599]

@@gautamvaze1101 Jalebi baby.

[@rexxbailey2764]

​@@atharvzemse6599: HOLY SHYITT!!! 😆😆😂😂😂🤣🤣😂😂😂😆😄👍 DAMN! NOW THATS A MOMENT TO BEHOLD! 😂😆😄👍👍😆

[@tp-li1wy]

​@@gautamvaze1101there was a local band performing absolutely random songs. I remember bruno mars was followed by an old Bollywood song. It was a litt vibe, the free booze definitely helped 😂 It definitely was a great time, I was still an undergrad student back then (graduated 2 weeks later). I used the student card to talk to anyone and everyone, I'll miss that superpower. 🥲 During the gala I found myself standing in line for crepes with the chairman of ISRO behind me, I still worry he was judging me for the toppings I chose 😅 Too many fun experiences those couple of days, I won't bore y'all with all the stories 😂

[@mikehibbett3301]

Considering this is their first landing, they have deployed and utilised such a fantastic array of technology! Delighted for India

[@mercedesbenz3751]

What precise landing, the solar panels faces towards the sun. Wow.

[@TheGreatAtario]

Er. It turned around to face the sun after the landing.

[@BondJFK]

@@TheGreatAtario not really, First when it landed sun was in left side same direction of rover's solar panel you can see in that video, but rover moves very slow so by the time it reaches few distance sun moved to top right side so rover turned

[@teebob21]

@@BondJFKThe rover will do the needful.

[@awhig2474]

As an Indian, I want to say one thing The Lunar day is 14 Earth days and night is 14 earth days. At south pole, during the Lunar night, temperatures can go as low as - 300 deg Celsius, and the instruments (expecially batteries) will not come to life after that. Hence the project has a limited life time. Now, having said that, I think the Solar Panels are on all sides if the Lander, because during the course of Lunar Day (14 earth days), the Sun will rise from one side, and set towards the opposite side. Hence I believe, to sustain a Lunar day, the Solar Panels should be on all sides of the Lander. The rover, on the other hand, can change its direction to gain solar energy.

[@kogg8789]

Hi rover travelled 500meter and 2 day before night they shut down rover for lunar night hope it can work again

[@jayanthsiddalghatta630]

Seeing the Moon dust blown by the aselenizing jets at the end of the video feels unreal. CH3 lander has radar altimeters but just thinking about how it could visually estimate range/orientation on such a fractal landscape makes my head spin! Well done ISRO ! You are the best!

[@nsn5564]

There is very little gravity on the moon, so you have to use thrusters to fire very delicately, trying not to get bounced up again. The first location to land was not acceptable, so it had to retarget to a second location. There was only enough fuel to re-target once, so luckily it all worked.

[@arunpatil5302]

It's like taking a Helicopter flying at 6000 KMPH to land on moon surface where there is no atmosphere & with rockets/thrusters. Now one can imaging the complexity & what has been achieved.

[@Tate525]

​@@arunpatil5302True at a 70 million dollars this is mind bogglingly amazing and cost efficient, especially considering ISRO doesn't even have the ability to recover back the rockets. If you guys can master the capability to land back the rockets, these missions would get even more cheaper.

[@richardmillhousenixon]

As long as you scale everything for 1/6th gravity, including the TWR, it's not a _huge_ issue. Still some places you can't land, but the bouncing issue really isn't that severe

[@ashutoshjha225]

​@@Tate525ISRO is currently working on NGLV which is basically a reusable rocket having a payload capacity of around 25,000 Kg. I think it's engine is ready and it will be used to launch satellites around 2028-2030 the same time when India planned their own space station and mangayan 2( Consists of Orbitor and lander to Mars)

[@artculture1711]

The Rover being able to come out so soon after landing points to another achievement. That the landing was much smoother than expected .. so much that it did not rile up the dust clouds on the surface during landing. Very few & rare dust clouds meant very little time for their dispersement (would take a long time to settle down on surface due to low gravity.. dispersement would be less time consuming if volume of clouds is less) .. & quickening up the further procedures. That is a smooth sophisticated achievement. Wonderfully done by ISRO

[@TheEvilmooseofdoom]

Dust doesn't form clouds on the moon. Never has, never will.

[@artculture1711]

@@TheEvilmooseofdoom I'm talking about dust clouds formed by riling up the sand on the surface as the lander came in contact with the surface with an impact. Would take long time to settle down due to lack of gravity .. But would disperse quickly if only very little of it is formed .. this ensuring quick river exposure without risking it getting covered with a dusty layer of surface dust.

[@RobStark-fw6ig]

They have given a 2 hour break between this process bro video is edited and speed up 😊 of course even every thing is perfect but precautions are the only thing to prevent problems 🤭

[@cloudk2088]

Congrats to India and ISRO!

[@arunpatil5302]

The mission is not to take selfies but check regolith for constituents, temperature gradient & few other studies. Due to limited features, payload, power, communication baud rates etc camera has low resolution but enough for its intended purpose.

[@gilmer3718]

Good work, India!! I hadn't even heard of this until I saw it had landed. Of course, I don't watch network news or anything like CNN, MSNBC, or Fox, so It's no wonder I had no idea this was happening.

[@dontjudgemebymyname.4282]

It's good that you don't watch them, their views towards India are usually very biased and misleading for Western audience anyways.

[@abhi36292]

good things ,keep away from the alphabet boys' propaganda

[@johnysins69696]

it's good never watch those news channels

[@okman9684]

Yeah there is some coverage by CNN but FOX is busy decoding the mugshot

[@rimurutempest2130]

CNN MSNBC busy discrediting India how poor it is . They don't know anything about Science .

[@andersjjensen]

That landing really looked on point. Almost unreal. Until you remember the gravity of the moon is not the same bastard to deal with as the gravity of Earth.

[@ManBearPigCreative]

To be fair, its still the same beast, only the rates of change are different, the same control challenges remain. An excellent achievment.

[@Meghnaaad]

No air too to decrease the velocity.

[@thearpox7873]

@@Meghnaaad No gust to wind to screw you over and adjust for.

[@kjjkbuh9896]

You said it.. Unreal.

[@svanimation8969]

Have a look at ch-3 honeycombe like lander pads to obsorb shock while landing

[@marklandwehr7604]

Way to go India😊 it showed everybody that India could do it for way less amazing🏁

[@EvanEdwards]

It is a wonderful accomplishment! If I'm correct, the lander is roughly at the equivalent of Utqiagvik (also known as Barrow) in Alaska, the northernmost point of the US, which is in line with the northernmost point in Norway, and well above Iceland. Flipping to the south pole, McMurdo is closer to the pole, but it is within the boundaries of Antarctica for a good chunk of the latitude (although a few of the large bays cut in). So respectably close to a polar landing. Certainly, as you say, the polariest so far.

[@Charlie-Oooooo]

Thanks for the update Scott! Very informative and enjoyable as always. The general software problems you mentioned has, is, and will continue to have the highest risk of failure in any and all complex systems (aside from non mature or experimental tech), as I'm sure you know. The nature of and problems of software quality control would make a great topic to present! Cheers!

[@striker44]

AI should be used to change the code based on real time sensory data and that updated code can be programmed into the onboard hardware realtime. Not sure if that has been done on CH3.

[@Charlie-Oooooo]

@@striker44 @striker44 That's a great idea! But let's be realistic, there's many complex issues to solve in programming first, meaning AI is about as ready to take over programming as it is driving cars (probably less so). For example, large complex systems have many many possible states, based on the variation of the combined states of all of the smaller modules that comprise the total system. In other words software gets complex quickly, in part due to the combined possible states, substates and state transitions of all system subcomponents. It's not like a chess game where every move results in a state with a finite set of possibilities, based on a fixed rule set and a fixed range of potential input values (squares that each piece on the board are able to move to at any one point in time). And before you even talk about coding errors, such as priority inversion (Mars Pathfinder is a splendid example), there is the basics of generating system requirements by humans, and then mapping those requirements to actual software. AI is helping but programmers aren't in any danger of becoming obsolete any time soon! Cheers! (and sorry, I didn't mean to write a book here)

[@BondJFK]

@@striker44 that will be a disaster there is no time for testing when landing on moon but they can simulate the scenarios on earth

[@nikita9203]

We are really very proud of our ISRO scientist. 🇮🇳 I'm so happy reading all the comments here . Such an educated bunch of people with no judgement or racist remarks. You all are the best . And thank you Scott for such a wonderful video 👍🙏

[@waylanddavick9459]

Well done, ISRO! Congratulations on a successful landing. Look forward to seeing more images!

[@jackallread]

That was a very smooth touchdown! Well done ISRO!! And, you already have some science data returned with the temperature gradient below the surface of the regolith! Thank you!

[@embergamedev]

I'm excited to start calling all of my landers in KSP "hard landers" from now on

[@stevetbaptist]

Keep practicing lithobraking your hard landers.

[@SystemBD]

I just reclassify them as "impactors".

[@striker44]

I'd call them ISBMs - Inter-Space ballistic missle.😂

[@Simple_But_Expensive]

Bunker busters to keep the alien invaders heads down. Never seen a UFO in KSP, but never seen one IRL either. Still, better safe tha sorry!🤣

[@MistSoalar]

Kudos to ISRO. For the budget they got for the mission, this is an unmatched achievement

[@johnarizona3820]

Congratulations India. Great work!

[@dmitrynuzhdin]

Wow, I am really surprised by the temperature data. If the thermal conductivity goes up (as deeper probably means denser) if we drill a few meters deep, that temperature difference could be used as an energy source! Like the Stirling engine or something similar.

[@AthAthanasius]

Yup, as soon as I parsed the graph to "+60 C to -10 C over ~10cm" I was thinking "surely this can be used to generate power, if only for low-power cheap sensors 'scattered' over the Moon?".

[@Rainer_Landes]

I assume, this will not work well.... As the regolith does not transport heat well, this means that temperatures can be very different in two spots that are near. But this means two things: 1) as we have seen, temperature can be much lower just a few millimeters away 2) If you buid an engine that harvests energy from temperature difference, it will quickly heat up the surrounding of the cold end of the system. And due to the bad heat transmission of the surrounding, it will stay that way, and the engine will stop working...

[@dmitrynuzhdin]

@@Rainer_Landes 100% right, but maybe if we dig deeper there will be higher thermal conductivity

[@Rainer_Landes]

@@dmitrynuzhdin this would be perfect, then!

[@imconsequetau5275]

​@@dmitrynuzhdin It may also be possible to inject water into the drill hole and greatly expand the surface area and conductivity of the cold sink.

[@wolpumba4099]

*Video Summary: Chandrayaan 3 - After The Landing What Happens Next? by Scott Manley* - *Introduction (**0:00**)* - Congratulates ISRO for successfully landing Chandrayaan 3 on the moon. - *Landing Footage* - Discusses the landing sequence and the quality of the footage. - *Celebrations in India* - Highlights the celebrations in India, including Prime Minister Narendra Modi waving a flag on screen. - *Rover Deployment* - Explains the rover's deployment process, including solar panel alignment and ramp descent. - *Rover Instruments* - Describes the rover's two main instruments: Alpha Particle X-ray Spectrometer and Light Induced Breakdown Spectroscope. - *Landing Coordinates* - Talks about the efforts to pinpoint the exact landing coordinates using online resources and official ISRO images. - *Polar Landing* - Discusses the significance of the landing site being within 20 degrees off the South Pole. - *Comparisons with Other Missions* - Compares Chandrayaan 3's success with other missions and mentions the importance of software testing. - *Scientific Contributions* - Mentions the CHaSTE instrument (Chandra's Surface Thermophysical Experiment), which measures soil temperature to help model thermal properties and potential water retention. - *Conclusion* - Talks about the importance of finding water on the moon and wraps up the video.

[@okman9684]

Thanks for the time stamps 👍

[@ramboog2654]

Thankyou very much bro.

[@arctic_haze]

Well done, India. Congratulations! ❤

[@ShipinPro]

Thanks Scott, Very informative video. Looking forward to the exciting science coming out of this mission. Well done ISRO, truly inspiring.

[@jitendrayadavweb]

The temperature jumps between -10 and 50 degrees C just within 8 cm of pits and bumps !😲 This info is quite intriguing.

[@sciexplorer5649]

I just wonder why they used a superscript zero (0) instead of a degree sign (°) on the chart? 🤔

[@NatarajanGanesan]

I'd be curious to see at what depth the temperature remains constant, if it does. A full lunar hour by hour plot of temperatures would be nice

[@Xinnie_The_Flu]

A 70°C fall in temperature with just 10cm depth during the day time on the moon, is honestly very scary. We really do take our atmosphere here on earth for granted.😂

[@linecraftman3907]

@@Xinnie_The_Flu it also drops off dramatically in the shadows!

[@doctorpanigrahi9975]

​@@Xinnie_The_FluWe wouldn't be alive if it was that extreme.

[@Xinnie_The_Flu]

@@doctorpanigrahi9975 yep

[@Martinit0]

@@Xinnie_The_Flu It seems like it's more extreme than hot dry sand on the beach, but maybe only by a factor of 2. Maybe more close if the sand was black?

[@DarkKnight-OO7]

Not expecting high quality images from ISRO, as with only 14 days they would prioritize science than clicking high-res images and sending back.

[@friendlyatheist9589]

Rover only has 1 megapixel cameras just to guide rover not to take footage

[@friendlyatheist9589]

Á

[@TheBharat645]

But the Orbitor of Chandrayan 2 has the power

[@AndrewHillis_2024]

0:00 - 2:00 NOW THIS HOW YOU 'STICK' A LANDING ! ! ! WELL DONE I.S.R.O. ! ! !👍👍👍👍👍👍👍

[@gauravdube8133]

Water on moon was first discovered by Chandrayaan 1, and later confirmed via NASA.

[@abhishekpas]

​@@hundredfireifyTechnically it was a Taiwanese chip. No competition here was collaborative success.

[@aleenaprasannan2146]

​@@hundredfireifyNot really. It was ISRO's impact probe that picked up the evidence for water physically from the lunar dust with spectroscopy. NASA's payload was on the orbiter and only added to the finding with remote sensing data much later. NASA tried to take the credit with questioning the veracity of the probes findings, but all doubts where cleared and even journals have revised to credit ISRO for it.

[@paragbhuyan6090]

@@hundredfireify supposedly u buy iron from Russia build tanks in USA......would u give credit to Russia

[@hodisfut]

@@paragbhuyan6090 the whataboutists really cant give it a rest

[@dgf1312]

@@hundredfireify physically most of the scientists in nasa are indians...credit return back to us also

[@mvadu]

Thank you Scott for explaining what the mission is and how it's done..

[@dansorkin6985]

Congrats to ISRO and thanks, Scott, for this excellent and informative video.

[@primenumberbuster404]

I would like to Congratulate India for their massive contributions to the rest of the World. 🚀🌚👩‍🚀

[@vandanasingh6248]

Not the first lol

[@OsinakiKun]

​@@vandanasingh6248first in south pole lol

[@katterhindu9551]

Mission accomplished by ISRO❤

[@psquare2260]

By comparing the shadows, you tried to figure the time it has taken between two incidences. Loved it. Felt like watching a thriller movie.

[@Cosine_Wave]

After commenting on the excitement/interest shown for the launch, I'm surprised you didn't mention that it broke the KZbin livestream concurrent viewer record.

[@johne7100]

"...they corrected the problems and tested all the potential things that could happen. In the end the landing was actually flawless and all that extra work wasn't necessary". Funny, that sounds eerily like the comments made after Y2K, when everything went flawlessly and the eyes of untold thousands of software stiffs round the world bugged out when the millions of man-hours they'd been putting in to make sure of it were casually dismissed as unnecessary. Some of us cried ourselves to sleep for a month after that. Well done, ISRO, and especially your painstaking and meticulous software teams. The lion's share of the glory is yours. And thanks, Scott. This is the best video and best commentary I've seen on this so far.

[@Pike737]

You missed the info about the propulsion module. Propulsion module of Chandrayan 3 has been equipped with spectrometer to observe Earth after it has deployed the lander and use the readings to correlate it with the observations of exoplanets to determine which exoplanets emit similar spectral signatures like Earth aka in Habitable zone. Such efficient use of technology, nothing goes to waste. Good work India!

[@valanikevin]

Our prime minister said, Chandrayaan 3 success belongs to the whole world; all of humanity. I would like to congratulate people from all around the world, scientific achievements from this mission will help all of us for future space exploration.

[@ManBearPigCreative]

Im so happy to see this mission succesful

[@frankgarcia8087]

Hi Scott! Love the videos! I hope the flying is going well! Fly safe!

[@skip156]

Congrats to ISRO and great break-down Scott!

[@commieTerminator]

8:26 Wow. If u could dig your finger in the soil near Lunar south pole then the tip of your finger would freeze while the base of it would be at a barable hot temperature. (Yes, we need a thermally conductive pressurized glove to experience this)

[@sdebeaubien]

Way to go - ISRO! Great analysis Scott, as usual.

[@PTNLemay]

1:00 This got me thinking "Oh you could probably automate that with a script of some sort". Which made me remember Scott is a programming wizard who works for Apple. So... in a way it's nice to know even the super pros have those tasks that sound simple but end up being a pain in the ass to automate.

[@SrinivasSakhamuriIND]

Thanks!

[@MixNMatcch]

India named the place and its surrounding where lander landed as ShivaShakthi.

[@WestOfEarth]

Super thrilled for India!

[@silentvoiceinthedark5665]

Scott I very much enjoy watching your videos, you have my gratitude for your effort. Could you explore the type of hardware on this probe in one of your next videos please? I want to learn about the types of rockets, thrust and how they turn the probe around to orient it to land. It seems that many missions have failed in this endeavor and I am not sure I understand the true nature of how difficult this task is to get just right to reach the surface of the moon intact. Many thanks to ISRO for getting this done perfectly.

[@JeffreyBue_imtxsmoke]

Great achievement by ISRO. Looking forward to some good pictures from the surface.

[@matttcoburn]

Nice temp graph. I can appreciate more now how water can survive just below the surface.

[@manofsan]

Thanks for an awesome overview of what's happened so far with this moon-landing. I'd read that in spite of having an X-band antenna on the lander, ISRO faces communications bottlenecks in getting images transmitted back to Earth and processed for release. I wonder if that will be addressed for future missions?

[@HemanthKumarJadhav]

I think the Rover has 1 mega pixel camera and the data rate between the Lander and rover is 600+Kpbs or something like that. Hence it would be better to use that that rate for the science that the shitty 1 MP camera images..

[@PsRohrbaugh]

​@@HemanthKumarJadhavmegapixels is almost a meaningless measurement. Pixel size, Field of view, dynamic range, and other things matter so much more.

[@anshu_1601]

​@@-DMI think he means to say that if the area your camera will cover is limited as well as close you do not need a camera with high megapixel....because you will not have to zoom in much digitally to study the area in detail...perfect logic...

[@gregalbert4033]

That's a pretty steep temp curve over a short distance, but it would show that in the 'polar' regions, water ice in the regolith would be practically just subsurface. Antarctica exhibits the same properties under the ice... At Beardmore South Camp, about 1 meter down (and the same below that), the average temperature of the ice is -40 (C/F)... which is the average annual average ambient temperature there...

[@Ayush-vy2kq]

On the moon just 8 cm down it's -10°C 😮

[@gregalbert4033]

@@Ayush-vy2kq I know... I saw ... but unlike the Ice, it has no atmosphere, which makes ALL of the difference in my statement...

[@amitpatilamit]

​@@gregalbert4033exactly! Atmosphere works like a lid. I expected a good temperature difference on lunar surface. However difference this big within 8cm is interesting. This can help understand properties and composition of regolith as well. Also, this would mean we may not have to go deeper to get water ice in case if there is any decent amount down there. Exciting times to learn new things about Moon! Next few years are going to be awesome!

[@anthonydonnadio4547]

I was waiting for a video like this!

[@mattymerr701]

I was expecting "speaking of impact probes.... chandryan 2" but glad that was not the words that followed. Congratulations abound for India!

[@RestorationbyAlabamaCreeks]

Great update Scott.

[@richb313]

Thanks for the update on this lunar lander mission.

[@MCsCreations]

Congrats to India! 😊 Thanks, Scott!!! Stay safe there with your family! 🖖😊

[@OneAnotherGuy]

Thanks Scott! 🙏 I am really happy to see our science enthusiastic friends across the globe, especially from US, congratulating for this intense mission. I believe Chandrayaan-3 will help humans in understanding more about the lunar surface, environment and the chances of surviving there. Thanks.

[@Eaglebird8853]

How I wish ISRO releases such educational videos and updates ....till that time comes we have to tune to Scott Manley .... Grear job !

[@indmusiclover]

Was waiting for this video of yours! Thanks for cleaning up the first part of the video. This angle of the landing was exciting! Reminds of the camera on Discovery launch (in the opposite). Really exciting stuff. Very good explanation. If you get more info from ISRO please share your inferences.

[@EngineeringPilot]

Google earth having the moon mapped just blew my mind, thanks

[@deepak_nigwal]

its been there for more than a decade lol

[@EnglishMike]

Wait till they hear about Mars...!

[@BondJFK]

Its Google Moon actually

[@bineetgupta]

After Mission moon its time for Mission Sun in about 5 days from now, race to the moon's south pole has been won by India, but there is a lot more to come in the Space Race 2.0 🇺🇸🇷🇺🇨🇳🇮🇳

[@MARIAS_ALAHTANOK]

Race? No offense but China and US are still decade ahead of India in Space technology

[@DavidDLalsa]

But the first to find water. How do you measure 110 years ahead? And some say it is for humanity and who knows. Some things may be shared.

[@amitpatilamit]

ISRO had repetitively mentioned it doesn't believe in a race and we are not trying to do one up against any nation. Space race back in the days happened due to US and USSR cold war. So, ISRO goes with it's own pace and plans. Doesn't care which country reached where.

[@rbrtck]

@@amitpatilamit Maybe it's not literally a race to ISRO and India, but it does mean something beyond the science. Otherwise, it'd be interesting to know why ISRO and other Indian authorities have said so, and what scientific purpose "branding" the Moon with logos on the tires serves (not suggesting anything sinister, but there is some national pride involved, I'd wager).

[@stynershiner1854]

​@@MARIAS_ALAHTANOKAnd all the more better that India won this.

[@TheRealPSKilla502]

If we ever mine for water on the lunar south pole, it will almost certainly be a limited resource, and some of it will be vaporized just by disturbing the soil, so we better have a good plan for using it as efficiently as possible

[@aleenaprasannan2146]

Maybe we'll have to develop infrastructure that can survive the lunar polar night to actually harvest that water

[@rohitkanisseri4822]

6:29 - " Speaking of impact probes, Luna-25 .....".. subtle, Scott..😂

[@chikukumar-tj1ml]

😂😂😂

[@Fanny-Fanny]

Well done to our cousins in India - we in the west salute you!

[@travcollier]

A note on "software problems"... If Apollo 11 was automated with a system which followed the protocols perfectly, it would have crashed. It too had an unexpected problems which the "code base" didn't handle properly. This stuff is legit hard. And I was happy to hear ISRO folks saying Chandraan 3 was "designed for failures", even though it does sound bit odd if you don't know the context

[@TheEvilmooseofdoom]

The prime problem was not code base, but data overflow. The computer was to slow.

[@travcollier]

@@TheEvilmooseofdoom The radar data overflow wasn't anticipated, so there were no protocols for dealing with it. That's the metaphorical "code base" problem I was referring to ;)

[@radheykumbhar5888]

What happened next??? Me -- Celebration and Gratitude for our scientists ❤️❤️🙏 Thank you ISRO❤️

[@mohan02]

Isro says..... 'Besides Sulphur, Preliminary analyses, graphically represented, have unveiled the presence of Aluminum (Al), Sulphur (S), Calcium (Ca), Iron (Fe), Chromium (Cr), and Titanium (Ti) on the lunar surface. Further measurements have revealed the presence of manganese (Mn), silicon (Si), and oxygen (O). Thorough investigation regarding the presence of Hydrogen is underway.'

[@TheEvilmooseofdoom]

Well so far that sounds very much like what apollo found. I would expect some uniformity in the regolith though.

[@allenphilip1008]

World Best Sky Scientists are in INDIA ISRO🙏🏻

[@ganeshnh]

And also NASA 😊

[@friendlyatheist9589]

When you realise rover only has 1 megapixel cameras..so it is only meant to guide rover not to take footage. Thing is that ISRO is not very much in PR they do it according to their needs to carry out experiments. Even though mars orbiter had great cameras it took great images but not as much as we expected even if took ISRO never released them. Same with chandrayaan two despite having the most powerful cameras orbeting moon they never released many images. ISRO need a dedicated team for PR

[@sivag2032]

Secrecy

[@E9X330]

​@@sivag2032which is a shame, NASA releases everything

[@ndgprasad]

The issue is the data rate is very slow. This time we got live images because there is not orbiter only lander so got more space for other stuff.

[@E9X330]

@kingkohli3759 they do, it's a public agency

[@MadMorgie6318]

There's something immaturely amusing about a penetrating probe being called ChaSTE.

[@badscrew4023]

Congratulations India with this awesome feat!

[@larryscott3982]

Given it’s 2 week service life I suppose uploading HD images and vid would take up valuable computer time. So in budgeting time for upload images may be tertiary. Concentrate on its science. It’d be grand if it wakes up next month. Even if only the lander resumes. And no comment on its very low cost. That alone is an achievement.

[@mmixlinus]

What specific components are at risk of failing during lunar night? My first idea is electrolytic capacitors, which can handle down to -40°C to -30°C, but I'm unaware of what happens below those temperatures, or if there are other components that will completely fail at -100°C. Also, why would certain components be OK to -40°C but fail at -100°C?

[@mmixlinus]

It seems Chang’e 3's moon lander and its rover *Yutu* woke up and could communicate with us after the first lunar night, but Yutu had some mechanical issues.

[@saranshgautam6551]

So nice to see India being featured on this channel among many others! Really proud of ISRO for accomplishing this feat!❤ They've truly inspired the next generation of Indian space engineers

[@kaypee4704]

Hopefully, they have inspired the younger generation around the world.....STEM is the way of the future for those in schools ....start young..♥️‼‼🇺🇸🇺🇸

[@untitled6391]

Scott I've heard that the ISRO sun mission is just a couple of days away, could you please make a video on that? It would be great if you could explain what Lagrange Point L1 is. Thanks for the great content.

[@AryanBanyal-g3j]

If you only want scott to explain, that's fine too, but i am gonna say it anyway. L points are those points in space were the gravity between planets and the sun is such that a thing at those points can remain suspended there with minimal or no fuel. There r 5 l points when talking earth and sun. 4 and 5 are stable, and pther 3 are unstable. Means in 1,2,3, and some fuel is needed to keep your craft there. Aditya L1 is going to the L1 point (obviously) because this is a point that provides the clearest view of the sun.

[@nirbhayatiwari5425]

It's simple bro :- L1 is located 1.5 million kilometres directly 'towards' the Sun ... L2 is located 1.5 million kilometres 'away' from the Sun ...

[@architakumar2579]

​@@nirbhayatiwari5425"It's simple bro", can't get more condescending and un-informative than that.

[@MixNMatcch]

It's on sept 2 aadhithya 1, Aadhithya - Sun.

[@deepak_nigwal]

the solutions to the restricted three-body problem, are called Lagrange points. Any two massive and gravitationally significant objects would have 5 Lagrange points (3 in-line with objects, 2 at an angle of 60 deg), some of them will be "meta-unstable" points (like L1, L2, L3) which can be considered as a hill and it would very difficult to reach on top of those hills in the gravitational field. Considerable amount of fuel would always be needed to achieve that point as well as to stay around that point for a period of time. SOHO, JWST, WMAP, Gaia, etc, were forced to orbit these Lagrange points to make observations but with constantly using fuel to stay close to these points. Similarly, Aditya 1 will be designed in the similar way. Other Lagrange points, called "meta-stable" points (L4, L5), around 60 deg to earth-sun, are considered as a valley in the gravitational field, where its easy to place an object but very difficult to take it out. These are often termed as Parking Spots in space because they are like gravitational wells which often attracts space debris, dust, rocks, or asteroids which may remain trapped there for years. Earth currently has 3 asteroids, called Trojans (near earth objects), trapped in L4 and L5... which are the expected to remain there for a couple of thousands of years. When the satellites run out of fuel, they simply drift away from Lagrange points (L1, L2, L3) and start orbiting the sun. Satellite missions are often planned using "meta-unstable" lagrange points because of their short service time and planned disposal after decommissioning, i hope you understand why scientists dont want satellite trash to compile in the "meta-stable" point, because of obvious reasons, these areas must remain clear for future plans. Proposed plans include space stations/colonies or relay centers, which will be parked in the "meta-stable" points to keep them in the exact spot in space, for years.

[@douglasengle2704]

I think its extremely useful to have temperature penetration probe at the lunar poles that has given a soil temperature of only -10°C at a depth of 80mm! That is actually very warm for a deep space object such as earth's moon at its poles! To have apolar polar lander conducting science is amazing right now. This has not happened before. Indiana definitely deserves credit for being the first to do this! I'd love to see deep drilling probes of the moon and mars to let us known what is down there. Just giving the temperature, as simple as the measurement might seem, gives huge insight into to orbital bodies because we really don't known what is going on. Deep probes would at the level of oil exploration drilling on earth is what I'd like to see. We are unfortunately not any where close to be being able to conduct that research. With SpaceX heavy booster and starship, if it functions, all it would take is a US congress approval to ship drilling mechanism to the moon with human habitat to perform the survey. That can seem sensible if the legal frame work is not overly restrictive for exploring the moon. Legally some form of real estate dedication needs to be derived for non earth parcels even if that is simply to say there is non right now. Earth's moon does have some international appropriations for research, but nothing like the legal structure if people were to reside there.

[@srinivaschilukuri-o4m]

In couple of years, India and Japan are sending a joint mission to moon. It has that deep drilling probe. I think it can drill 1.5 meters deep.

[@BlackHawkTejas]

ISRO & JAXA are collaborating for CH-4!! They will be sending a lander & rover there. Also will drill the moon surface & return with the moon:s soil back to earth!!

[@khunevidit15]

Does that mean theres ice beneath. Or its just the albedo effect?

[@death_parade]

I'd say Lunar exploration will follow closely what we've seen in Antarctica. I mean in terms of the laws and restrictions on surveys etc.

[@okman9684]

Congress is busy messing with spacex

[@Charonupthekuiper]

Apparently it cost less than a typical big budget film. Well done India.

[@thehawkseye3412]

ISRO Chief dance is old footage from some other function. Nothing to do with recent launch. Twitter users just used it as a meme.

[@ianyoung9837]

A side question. The poles of the moon appear to be more heavily cratered than it's equator, why is this? Maybe worth a video?

[@billirwin3558]

You got there in the end by hard work and persistence. Congratulations on this achievement. Flat earthers will not be happy at all. NASA bashing will now become ISRO bashing.

[@andytroo]

7:27 - all that testing wasn't needed - we'll have no idea if there was a few corrupted camera frames / sensor measurements that it managed to auto-recover from that would have crashed it in an earlier software version ...

[@striker44]

Congratulations India and ISRO!🎉

[@Dogo.R]

Id think ffmeg would allow for removing those frames in a decently easy way.

[@Allan_aka_RocKITEman]

Great video, Scott...👍

[@ppg2358]

Nice coverage of entire landing. I'm an Indian, and I'm proud of our ISRO. I watched it with more than billion people from around the world. Live... As the great visionary Carl Sagan said " The Pale Blue Dot" ...space is where, all the borders get dissolved, an we, as human race unite together to travel in cosmos....👍👍👍😍😍😍

[@factotubetamil]

Yeah we need world peace but sad reality is still many are there to discourage all 😢

[@YOUTUBE_AMERICA]

Scott Manley, your videos have been a guiding light through the cosmos of knowledge, illuminating the intricate beauty of space and science. Your passion for unraveling the mysteries of the universe is infectious, and your ability to explain complex concepts in such a relatable manner is truly a gift. Every time I watch one of your videos, it's like embarking on a thrilling journey through the cosmos, accompanied by your enthusiastic voice and engaging visuals. You've not only made me understand the intricate details of various space missions but also ignited a fire of curiosity within me. Your dedication to sharing your insights and discoveries is inspiring, and it's evident that your love for space is boundless. Thank you, Scott, for being a beacon of knowledge in a universe of endless possibilities. You've enriched my understanding of the cosmos, and for that, I'm forever grateful. Keep shining like the stars you teach us about!

[@dlrosbury]

Nice tribute to Scott. He's earned it.

[@lucash8234]

Well said!

[@OrangeDurito]

Wonderfully said! Scott has indeed inspired so many people worldwide to take greater interest in the intricacies of space science and technology. His curiosity and passion for this subject is awe-inspiring. I sometimes wonder how he produce such detailed videos so quickly. His work ethic is also insane.

[@fictionalarachnid7197]

I agree entirely! but the phrasing seems "LLM-y"...correct me if I'm wrong (trying to calibrate)

[@yugmathakkar4023]

ChatGPT

[@yte549]

Now Sulphur along with other metals are detected today

[@TheEvilmooseofdoom]

Sulphur has been a known part of regolith since Apollo. It was one of the methods proposed for 3d printing structures on the moon. Melt the Sulphur and use it as a binding agent.

[@yte549]

@@TheEvilmooseofdoom not only sulphur other metals are also detected, now we are looking for the presence of Hydrogen

[@yte549]

@@TheEvilmooseofdoom But it is not confirmed it through any scientific method, now we get a confirmation

[@TheEvilmooseofdoom]

@@yte549 It was confirmed in the samples that were brought back. So far they have not found anything new in terms of the composition.

[@yte549]

@@TheEvilmooseofdoomNo one discovered Sulphur in south pole except the chandrayaaan...every information from South pole is new..... You are a racist who can't digest our victory... 🤣🤣🤣🤣 Jealous has no medicine.... Cry more and more.... 🤣🤣🤣🤣 It's South pole of the moon 💪💪💪💪 and you people don't digest more🤣🤣🤣🤣🤣🤣🤣🤣🤣The information from South pole is the most important as for the future explorations..... 💪💪💪💪💪💪

[@abhikokkal]

ISRO is all set to launch a solar observatory mission named 'Aditya L1' to Sun this September 2.Aditya L1 shall be the first space based Indian mission to study the Sun. The spacecraft shall be placed in a halo orbit around the Lagrange point 1 (L1) of the Sun-Earth system.