What's Going On In This SpaceX Rocket Video?

NSF's John Galloway talks through interesting things you can see on the Falcon 9 rocket cam video released by SpaceX. The original video was found on SpaceX's Twitter feed, showing a single take of the booster launch and landing for the Transporter-6 mission from Cape Canaveral SLC-40. Twitter video source quality was 720p. Edited by Thomas Hayden.
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[@NASASpaceflight]

Falcon Heavy coming up soon. Merch available (of course!) shop.nasaspaceflight.com/collections/falcon-heavy

[@timboatfield]

High quality commentary!

[@didiercolstoun9428]

Fascinating, clear, precise and enthusiastic technical comments. Thank you.

[@jeffjeff4477]

Yes, please do more segments like this. Very informative! As I watch most of these from my backyard, it's really cool to have the commentary, Great job!!

[@nottsork]

i wish to add a correction , Air is not particulates , it is Molecules , O2 oxygen is 2 combines oxygen elements , (a Molecule) Carbon Dioxide (1 carbon 2 oxygen Molecule ) so in the absence of other rare elements air really is full of molecules

[@TC-kf9zw]

Every flat earther, that is totally cgi.... 🤣🤣🤣🤣

[@rockyraab8290]

John, former NASA spokesman at KSC here. That was a darn good analysis. The main reason they delay the leg deployment until the last second is to keep from burning the legs. I wish they'd describe how they navigate the booster with such precision - but that's likely their secret. As always, it is simply astounding. (I was also an AF pilot and WISH we had that kind of precision landing ability!)

[@cogoid]

They did talk some about it. It's just a fancy flight controller with a GPS and an altimeter. They put into it the target coordinates, the estimated wind, and the rest is the controller solving the trajectory optimization problem in real time. There was a good article on it, which also gave some additional references: _"SpaceX’s self-landing rocket is a flying robot that’s great at math"_

[@forloop7713]

SpaceX actually wrote a paper with NASA a few years ago on propulsive landings. They use something called non-convex optimisation

[@cavsh00ter]

That's why there's a Navy flight bunch, have a son that's a 18 pilot so I'm biased

[@andyfeimsternfei8408]

Basically PID loop control of engine gimble, cold thrusters and grid fins. Nothing terribly exotic, once it is turned properly. Tuning crashed many rockets but now they've definitely got it!

[@bensavedbychrist]

The problem is that if you can land a rocket on target you can land a bomb on target and the military wants a monopoly on that ability, so sharing how you do it even for educational purposes or hobby size payloads is a no-no.

[@fkngboss1470]

they put this videos in the algorithm so u dont see what u really looking for

[@RealidadeDaTerra]

The Earth is flat! That's what they are hidding with Fish eye lenses !

[@silentlamb2077]

then, fill the comment section with 50% of reinforcing bots and wah-lah!

[@garymills5220]

facts

[@delayedcreator4783]

what?

[@bcbbarnes]

Right before he pointed out the camera location, I saw what I expected to which was surprising!

[@GooogleGoglee]

So are you telling me that there was no cameraman physically hanging on the rocket filming all this? Dang... Technology!

[@marioluptak8476]

🤣

[@fredestrada2428]

And all this time I thought Tom Cruise was the camera man 😅

[@whatusernameis5295]

no they're just trying to hide the infinite power of the cameraman

[@richardpark3054]

You bust me up! Laughed so hard, Cheeto's came out my nose!

[@GooogleGoglee]

@@richardpark3054 😂😂 you made it visually clear... No need of a cameraman there 😂

[@riggedreality420]

One thing you can certainly see is the Go-Pro fisheye lens view of Earth, making it look ridiculous. All the worlds a stage.

[@opposition13]

Came to the comments to see if anyone else saw that… Why the need for it.. just giving flat earthers more fuel to prove their point…

[@shtoleva07]

What do you mean? Fish eye lens and earth looking ridiculous?

[@salvenezia1817]

@@shtoleva07the camera lens is a fish eye lens. It curves everything in picture. And since when is the whole earth water.

[@killamike287]

They don't want you to see how flat it really is 😂

[@Gorealaracer38]

😂 no stars,1of many RED FLAGS!! AND WHO TF MADE THE GUY TALKING AN OFFICIAL SPINNING BALL BABBLER 😂😂!!! ​@opposition13

[@hannesgroesslinger]

One point you didn't mention, but i think fits very well into this discussion, especially adding to the whole point of flame expansion: You can see that at the beginning the engines produce these long orange flames. As the rocket goes up and air pressure falls, the flames expand. But then one more thing happens: the flames become less and less bright, until at some point you can see barely any flame at all. Just before stage separation there is only a black cloud of exhaust gas coming out of the engines. The boost back burn does not produce a visible flame either, again only a dark cloud. Reason: The engines are running fuel-rich. That means that the mixture rate between fuel and oxygen inside the engines is such that not enough oxygen is present to burn all the fuel. There are several reasons why that is done, and i don't want to start that explanation since it would make this comment 5 times longer. But the point is that there is unburnt kerosene and soot coming out of the engine, together with all the exhaust gasses. That is all the black stuff you can see when the engines are running at high altitude. (And also the stuff that causes the "jelly-fish effect" if the lighting is just right) When the engines are running at low altitude, the exhaust flow mixes with ambient air. This allows the fuel from the exhaust stream to react with oxygen from the ambient, and burn. This causes the bright orange flames you see behind the rocket. Or at least the largest part of those flames. But as the rocket rises up in altitude the air density drops, there is less and less oxygen available in the ambient air, and the flames dim down, until they eventually fade out and you only see the soot.

[@bowtoy]

Spectacular Clarification. Thank you so much

[@miroslavmilan]

Excellent, thanks! I always kinda noticed it but never really thought about it.

[@xxpoisonblxx]

You know, the moment you mentioned flame color, I immediately knew where you were going with it and thought to myself, "Oh, hey, that's a neat point." ... but as many of these as I've watched, I just never registered it myself! Thanks!

[@bdickinson6751]

But..................but..................what about pollution and global warming?? 😲

[@xxpoisonblxx]

​@@bdickinson6751 One of the purposes of running fuel rich is to *drastically* reduce both mass, which would require a great deal more fuel to offset (and the fuel to *lift* that fuel, Tsiolkovsky's not very forgiving on that), and part/material complexity. By running fuel rich, they give a film over the nozzle that keeps it cool. If they instead went with more "active" cooling (and ran perfect fuel/oxydizer ratios and had an idealistic environment), they would need to potentially change the nozzle material, as well as add all of the mass and complexity of pumping the coolant and removing heat from the coolant too. Energy cost of manufacture of the components themselves would potentially overshadow the fuel saved, and paired with the fuel needed to *then* lift those components, and it's *very* likely far worse, ecologically. Lastly, you *still* have to err towards fuel rich. Rocket engines are just fire. Fuel, oxygen, heat. Given enough heat and oxygen (which you have in a rocket engine) nearly *anything* can work as a fuel. Including the nozzle itself. Excess oxydizer can and often will *find* something to react with to burn when provided an ignition source. Running engine rich is *very* bad for a rocket. The other detail is the fuel used. While hydrogen is great for cleanliness through the launch, that may be offset by the costs of production and infrastructure. It's also simply *very* hard to work with, as shown by the repeated issues on the ground side infrastructure for Artemis 1. RP-1 and Methane are simpler, and simpler allows a much higher launch cadence (which favors reuse, which means *not* producing and then throwing away the rocket after one flight, which is *also* better environmentally). Eventually, maybe, we'll get hydrogen production from green sources, cooling, storage, and use down to allow the same levels of use, but that'll be a while yet. Also, cutting out all spaceflight tomorrow would provide such a negligible change in carbon emissions on the whole that it's *definitely* not the tree to bark up.

[@stevenglasser2408]

Been watching NSF and similar content streams for years, familiar with everything you described. Yet, this was perhaps the best overall description of an RTLS F9 mission because of the format. Thanks to spaceX for sharing this footage and everything they have made public and Please provide more content in this format going forward!

[@Big_Un]

Simplified without being "dumbed down". Precise explanations with awesome visual examples. As always, great job! Thank you JG and NSF for everything you provide!!

[@DoctorZisIN]

I think the part of the legs deploying because of momentum didn't require a long explanation of what momentum is. Other than that, I agree.

[@MHollywood5]

"Whatever you wanna call it" multiple times lol. Precise.

[@residentfelon]

fake af lol

[@aliendude96]

@@DoctorZisIN haha I was just going to say this 😅

[@mtmadigan82]

@@MHollywood5 i'd think its pretty precise to call you a prick.

[@RandomnessTube.]

The fact that we are living in a time where we have relanding space rockets amazes me.

[@JaredOwen]

This is a very well done video. Really appreciate the excellent commentary. I would love to see more videos like this!

[@thefunniestfarm4731]

@@rickyevans5822 Lol, I love it when flat earth people launch themselves up in homemade steam rockets strapped to an rv and accidentally unlive themselves to prove the flat earth.

[@Slacker_eepy]

@@thefunniestfarm4731oh that guy wasn’t a flat earther. He was just using the flat earthers money to have fun in his life. God bless that man.

[@thefunniestfarm4731]

@@Slacker_eepy If that's the case, too bad he couldn't make it to orbit on their money :( Would have been epic fun.

[@Slacker_eepy]

@@thefunniestfarm4731 for sure. It kinda makes that guy more of a legend to me, as he literally scammed the flat earthers with their stupidity.

[@thefunniestfarm4731]

@@Slacker_eepy Is there proof out there that this was his goal and he wasn't a flat earther?

[@scottie_2024]

I think these videos are very helpful for those less versed in spaceflight tech. You explained Falcon in a way that my mother would understand, and that's quite a feat!

[@Simon-jv9bm]

I would love to like this comment but unfortunately I cannot add a like to the current 69 likes

[@nickgrimes-s8m]

😂

[@bernieshort6311]

I have always said since I first saw Falcon 9 launch that nobody, not even Boeing/NASA with its many years of experience can produce the viewer experience like one gets from a SpaceX launch, the photography is second to none. Now you come along and blow that right out of the sky with more SpaceX photography. That was amazing footage thank you so much for showing it.

[@MarrtinoJennings]

Lol cgi

[@clevc112]

I've seen better on video games and Hollywood movies. They need a better production crew.

[@midoribushi5331]

@MarrtinoJennings oh look at this guys, we've found the genius. You guys just don't understand anything space or physics related and thus, it's fake or CGI. Sad.

[@IanMcFerran]

Why is it that just moments after take-off, when the land is still clearly the launch area, the edge of the Earth's curve comes into sight? Aren't there meant to be miles and miles of sea before we see that?

[@StinkyScript]

The booster was already extremely high up when the horizon became visible. By then you are able to see hundreds of miles of the ocean.

[@knighttrider]

Curvature 😆 🤣 😂 😹 😆 🤣

[@austyn8708]

Loved that in-depth walk through, yes! With such amazing footage, as well! Thanks Das and NSF-Team!

[@madmmxx]

Agreed!

[@jackthecanuck6736]

Yep, bang on! I thoroughly enjoyed watching this one. I think that all the questions were answered.

[@proesterchen]

One little note: Falcon 9 is not falling during the boost-back burn, in fact, it continues to gain altitude well after the end of the burn (at roughly 3:23 min into the flight). During the Transporter 6 mission, the booster eventually crested at 146 km roughly 4:31 min into the flight. - Edit: Sorry, KZbin is reading the mission elapsed times as timestamps for this video, resulting in nonsense links.

[@linuxgeex]

It's falling (ballistic) the instant the engines are off. Whether it still has some upward momentum is a red herring unless it has escape/orbital velocity and vector. But it lacks that velocity, so it's falling back to Earth, period.

[@alankott3129]

@@linuxgeex He is talking about the boost-back burn. At this point the rocket is climbing again to increase time of flight for the return. Although Some on the forum have said that this is not always the case.

[@isbjorneliassen]

Yes, and the boost-back burn is a horizontal vector to cancel horizontal thrust and return to the cape. There is also quite a bit of slewing (horizontal flying) by the booster after the entry burn, so the return is more than just a ballistic trajectory. (If the booster loses complete control, it's ballistic flight will leave it short of the lz and it will fall into the water)

[@linuxgeex]

@@alankott3129 Even then the boost-back isn't adding velocity. It's actually cancelling out the horizontal component of the vector away from the LZ, and it's still ballistic, which is falling, even if it's falling up temporarily. The flamey bit needs to be pointed a different direction for it not to be falling. NSF is right, he's wrong. Though he's understandably wrong, ie it's not an easy concept for people new to rocketry that you can be *falling* *up.*

[@linuxgeex]

@@isbjorneliassen Agreed, but ballistic is the overwhelming flight behaviour, lol. They have a small amount of discretion *where* it is falling, but they reserve what little discretion they have *whether* it is falling for the last few seconds so they don't make a crater ;-)

[@davidhorizon8401]

This was an awesome explanation and I would LOVE to see more videos like this. You did a really good job of explaining things and keeping it interesting.

[@Truthisouttheresomewhere]

How come we can’t see curvature and why can’t we see the earth revolving ?how does the rocket align it self with the landing point? How does it adjust for the rotation? Please I’m so confused? I genuinely want to under stand how come we can’t see the earth spinning and how the rocket is over the place it launches from if earth spinning at what a thousand miles per hour? ( don’t quote me on the number I don’t claim to know the exact speed I just know it’s fast) my brain tells me if I was riding in a convertible and jumped up out of it while it was driving 100mph down the freeway I wouldn’t land back in the car it’s be long gone how come the earth appears stationary and the geography doesn’t change? I’m not joking I actually trying to get a explanation that I can understand thanks!

[@thomashayden804]

On the launch pad it's perfectly "in sync" with the Earth, and as it starts going up it remains "in sync" because it's all within the atmosphere. As it goes up and starts turning to go sideways it begins to "desync" because it's trying to go at a different speed and the atmosphere is getting thinner so it has less effect on the motion of the rocket. At staging the rocket's only moving at 6000km/h relative to it (including going upward, so the horizontal velocity is even smaller) and it's ~70km up. This means the apparent speed of the earth is fairly low compared to if you were perfectly stationary outside the earth. This is also similarly true with the geography of the earth, where you are theoretically able to see some more (if the camera were looking in the right place), but the booster never actually goes that far down range so it does stay fairly close to the same space the whole time. With returning to the launch site, it's actually fairly easy. You know how far the earth's going to have rotated since you launched, so you have to aim for where the launch site will end up once you get down to the ground. It's obviously a little more complicated to actually math that out since as you enter the atmosphere it will slow you down and bring you back "in sync" with the earth's rotation, but the idea remains the same. This would be equivalent to you jumping out of a convertible and firing a rocket engine or something to accelerate yourself forward so that by the time you dropped back down the level of the car you'd ended up at the same spot the car ended up with.

[@tjjones621]

We all use your map dude, give it up, you got punked.

[@Truthisouttheresomewhere]

Ok so the how come I can jump off the top of a car going 100mph and land back on the car?

[@tjjones621]

@@Truthisouttheresomewhere If you try it you will find out what wind resistance is and we will have to start calling you scabby. Step outside the box and examine the map that is on the dashboard of that car.

[@corrinastanley125]

Great talk through, thanks Das and NSF team.

[@OliverTheSpaceNerd]

I hope that Spacex tells us one day how they refurbish the boosters. That would be so awesome to know what the process is and how much is actually refurbished! Awesome video as always!

[@robertweinmann9408]

I think their potential competitors would love to know that process.

[@OliverTheSpaceNerd]

@@robertweinmann9408 indeed!

[@ptolemythespacenerd]

One of the best NSF videos by far! Great explanation!

[@oljobo]

Yes!

[@nickgrimes-s8m]

Wow are you that stupid

[@Bloodhound_Dogg]

This proves the earth is not flat

[@TheAverageEgg-e7h]

Those flerfs already started yapping that it is cgi

[@aikidoshi007]

Thanks John, can't get enough of the coverage from SpaceX.

[@skipknot7389]

You like cartoons, Eh?

[@jaimscarey2994]

This fake

[@saschay2k]

"Everything can be an UFO, if you’re really bad in identifying flying objects." Made my day!

[@boris3017]

@saschay2k. But when you Master your skills, you can identify them, easier. Nasa is a side-dish of the Bible. Both have same purpose. Distract humanity’s mind. Only lazy parrots are submerged into the Lie. But the Bible gives you hints. Nasa doesnt, nor the Gov.

[@beanshady]

Please continue to cover topics like this. I'm not an engineer and found this information informative and easy to understand.

[@bradloring2149]

Every landing I witness makes me giddy inside.

[@ecohen2010]

Please do more of these videos. Das does a great job explaining these videos. His energy is so wonderful as he explains these issues.

[@tctc0nsulting]

Yes. I like these fuller, more complete, explanations!

[@nathangladden4518]

I love these kinds of breakdowns! I'm not well-enough educated to notice them myself, but I absolutely love to learn about them. These kinds of videos are my favorite. Please keep them coming! (Especially as we start to get starship videos...)

[@KillerCuddles-fc6kg]

i bet within the next decade a human can really walk on the moon

[@ClappyCakes]

@@KillerCuddles-fc6kgcan’t walk on something that’s not a rock

[@KillerCuddles-fc6kg]

@@ClappyCakes I did... I walked on a tree branch after I climbed the tree

[@ClappyCakes]

@@KillerCuddles-fc6kg .... dude what? You missed me point entirely.

[@KillerCuddles-fc6kg]

@@ClappyCakes LMAO Did I? ;-)

[@brandonpennington1983]

The engineering behind this is just top notch amazing

[@kipbrown1549]

Its a balloon with a smoke machine ////////////////////////// Growup //////////////////////////////////////

[@sailorman8668]

@@kipbrown1549 What 'balloon' are you referring to?

[@201042Bob]

I just really like the way you explain this, you are easy to understand and get into little details without getting too geeky. Hope you continue and would like to see similar vid on starship.

[@tomv5782]

Another thing that's great about this video is watching the F9's position relative to the Earth during the boost back burn. You can see it moving downrange as it flips, and then slow down, but still travel upwards as it completes its "altered" ballistic trajectory. The Earth appears to stop revolving below, but keeps getting farther away. The boost back burn is intended to change the horizontal velocity and direction of the booster, but no so much in the vertical. It starts to descend a little later.

[@nickgrimes-s8m]

😂

[@jessicakirsh]

Great work, Das & @NASASpaceflight!

[@ShirlThewatchWatcher]

Ppl are not distracted no more by distracting news to take the ppl away from what's really happening, now all news is not bad. Good content young man

[@Poodlehere]

Yes please do more videos like this and I think the question everyone was really asking about was the cords inside the innerstage that you see dangling during stage separation. Also even though it might be old could you do one of these types of videos on the space shuttle. I grew up with them and was in the 5th grade when we lost Challenger. Up until that point she was for some reason my favorite vehicle and I was very sad that day. I was sad for Columbia as well but even sadder when the shuttle program was shut down and today I am proud to say that the falcon 9 and Crew Dragon is my new favorite space vehicle and can't wait to see a launch in person. Please guys at NSF keep up the great videos and thank the whole team for bringing us such great material. You guys are Awesome

[@magnetoza]

5yrs old, such EM damage it caused . hahahahha

[@edcallahan9536]

Been watching NSF for years now. Great commentary and video-love your work-thanks as always!

[@LesQme]

So what your saying is You've been watching NASA deception for years 😂

[@lieschenart]

One of the best NSF videos by far! Great explanationn an yes, I like these fuller, more complete, explanations! You (NSF-team) should do more of these analytic videos.

[@WilliamBTCWallace]

Why can’t they to this WITHOUT a fisheye lens camera? The earth has a curve but then it flattens out. Just put a normal camera to show the curve. Seriously not hard. Then we can shut everyone up.

[@codycampbell790]

SIMPLETON 😂

[@Dreidelmeista]

You have the intelligence to recognize they keep using fisheye lenses…but something’s keeping you from acknowledging what that really means. Deep down, I think you know but you’re not ready to challenge the collective group think

[@billmachi]

This video has generated a lot of interest.

[@maryellerd4187]

I enjoyed the narrative. I had seen the video and understood the general principles of what I saw, but your narrative made things clearer. Thanks!

[@WatchesTrainsAndRockets]

Thank you for doing this. It really helps me understand more of what is going on during a launch and landing. I am grateful that SpaceX is mindful enough of the public to share this with us.

[@johndelvfar3675]

Yes please to more of these! To include each stage of falcon and starship. I don't have the time to follow as closely as you folks can and a concentration look at all of them is a great thing. Thanks NSF. You folks are awsome!!!

[@WonderfulWorldofWaltersDadMark]

Excellent piece Das and +1 to management to let you do more of these. I love little dissections of process. Like “why do they need to extend the TE for Falcon Heavy?” An add to this one would be the fact that we clearly could see the booster still gaining altitude after MECO. I don’t think we had seen it that clearly before and certainly not on stream. Saved the video just for that piece alone, to describe what’s cool about RTLS.

[@magnetoza]

lol he showed the same streams u could get public. lol .; little searching and would have found.

[@juandidodonjulio]

Where my flat earthers at?

[@parkseybeams2297]

Not here but some weird shit is going on earth for sure

[@NewLifeFromTheWayofTruth]

​@@parkseybeams2297I choose not to believe scientists and science that have invested interests, like trillions of dollars of Interest..

[@neverwinta7702]

Here

[@atoetral9644]

😂🖐

[@JS-ed2hg]

I've seen quite a few failures when it came to landing those boosters to reuse. I remember when they nailed it, it was a pretty big moment in my eyes. Now successful mission after successful mission.

[@Felix-no7nx]

12:13 YES please do more of these commentary videos! They are very informative, have great hosts and are very well produced! I yust love them! Please!

[@wicklowjohn]

Brilliant vid Das, sharp, concise, and extremely informative. Definitely add these type of videos to the channels repertoire

[@Leatherman78]

Love the narrated commentary. More please! Keep up all the great work you guys do @NASASpaceflight!

[@EdwardHawthorne-y2b]

I like seeing this perspective view. I have been lucky enough to watch 14 shuttle launches while living in Titusville back in the late '80s & early '90s. Thanks.

[@jamestriplett5854]

I love hearing Das' enthusiasm for rockets

[@davidspence3021]

Well done Das! Love the humor peppered throughout! Great explanations and breakdown! NSF rocks!

[@phoenixjim0527]

The flight clip (first 35 secs) is compelling! One of the most amazing things I’ve seen in years.

[@slipshankd1307]

You did great explaining. I really appreciate it because we don't all know a lot about what is going on.

[@marklowe947]

This was an excellent video that they posted, and you did an equally excellent job explaining everything. It would be great to see more of these!

[@TheMovieLoft]

Definitely do more of these it’s only gonna get more complicated very well explained thank you

[@Vatsyayana87]

Oh man, one of my favorite videos from you guys ever. Which is saying so much. Well done Das and well done team.

[@finchharper4647]

I loved this and this was the first video of this channel Ive ever watched.

[@FinancialBob]

Excellent review John. Would love to see more of these when possible. Thank you!

[@R0bobb1e]

It was very informative, especially for people that don't know a whole lot about F9. Even if you do understand it all, it can be helpful having the explanation next to the visual. Personally I thought is was a magical shot. Getting to see the whole adventure the booster goes on. It would be great if sometime we got to see the entire adventure of the 2nd stage, in time lapse or something like that. :) Good work Das!

[@johndododoe1411]

Unfortunately we don't see the life if the booster between flights, not even a timelapse of the few days or weeks in the hangar.

[@R0bobb1e]

@@johndododoe1411 That too would be cool to see, but I am guessing the refurb process would expose a lot of IP things... :/

[@johndododoe1411]

@@R0bobb1e Well that's their problem, not ours. But they did release such video of space shuttle refurbishment.

[@R0bobb1e]

@@johndododoe1411 I still want to see it and there is the little fuzz out thing that is often used. lol Anyway, do you have a link for the Shuttle refurb?

[@jimj5224]

Always enjoy Das commentary. Good mix of knowledge and humor.

[@antonioroseman4561]

Nice fisheye lense for the camera too

[@BahamianKingGaming]

Yea to make the earth appear round smh

[@hraddle50]

​@@BahamianKingGaming IDIOT 🤦🏾‍♂️🤦🏾‍♂️😂😂😂🤣🤣🤣

[@keith726able]

​@@BahamianKingGaming keep shaking your head. The rest of us will keep doing real science. Don't leave your mother's basement!

[@Tummysticks315]

@@keith726able dont knock the basement ive seen some pretty sweet ones full bar, stripper pole, pool table and vintage arcade games plus they stay cool trmps in the summer

[@salmonie]

Keep using your dumbo lenses viewin the world, n keep your delusion of flat earth

[@MSmith696]

I saw the video when SpaceX released it but didn’t really “see” all of it until I watched this. Thanks for the awesome explanations.

[@bertschb]

Outstanding commentary John! And yes, we'd like to see more of this!

[@darkace5959]

Thanks Das for the deep dive that was cool! I knew a lot of that but it was still nice to get a play by play break down. I know NSF does have a lot of great coverage options but I would enjoy more of these.

[@hoss1003]

Thanks for this Great Narration Explanation.. I've watched, dozens or maybe hundreds of launches and now, landings in my 66 years of living on planet Earth. But, I like the way, You.. Narrate and Explain the Intricacies of a Rocket launch and a Controlled Crash or Landing in this video.. I wish the boring Guys at NASA and SPACE X could do it as well.. Have a Great Day

[@NASASpaceflight]

Thanks! -Das

[@3kingsgaming398]

I currently work at SpaceX and this video was very informative. Great work!

[@jodymalotorres]

I want to work at space X

[@ClappyCakes]

Fake X

[@thedude9014]

@@ClappyCakes XDXD but you real m0r0n XD

[@marioluptak8476]

That is a really cool video from SpaceX

[@i-_-am-_-g1467]

It's one I've begged for, for so long! Now they need to do the same thing in their livestreams a single take livestream on board the f9 and also a full single tracking camera video would be great!

[@forge_gamer5174]

Yes more of this please! Maybe do one for drone ship landing or this but for Falcon Heavy. That would be cool.

[@Vatsyayana87]

Their pinned message is them saying Falcon Heavy coming soon. So :)

[@forge_gamer5174]

@@Vatsyayana87 oh lol Im dumb. I didn't see that the first time lol.

[@Vatsyayana87]

@@forge_gamer5174 lol, i only see the pinned if im just going through looking for questions i might have an answer for.

[@williamjoseph4996]

Why is the speed different from the view from the camera not attached compared to the one attached to it? That much thrust should make it move faster than the video from the non attaached camera.

[@Grannynan]

Great video! I grew up here on the Space Coast, watching launches ever since the first Mercury rockets. I still get a thrill with every launch! And I really appreciate these informative videos.

[@ClappyCakes]

Oh so you’ve seen the fake launches first hand?

[@insertusername132]

@@ClappyCakes stop being a dumbass person trying to deny what people seen with their own eyes.

[@brenthopley874]

Hi There John, having spent my almost entire working life in aviation (predominately engineering and project management), this clip is both informative interesting and very well presented, so thank you and very big yes to doing more of this type of commentary. Rgds BH from NZ

[@4rmys4e48]

I love when he says “air particles or whatever you want to call it”. This is real science and engineering!

[@Creadeyh]

Need more "Das explains" videos, this was cool to watch

[@gregs4563]

well done John. Been following falcon ( SpaceX ) for years , good explanations of flame color or shape at different levels of atmospheric pressure to no pressure

[@jonathanharrop2978]

Absolutely loved this video. You explained so much in such a short time. Thank you.

[@Y_Mike]

Great job as always Das! Miss your KSP streams. Glad you’re enjoying another chapter in your career with some neat science.

[@kimbreleymora699]

I learned more about rocket launches in this video than ive ever learned throughout my life! Thanks!

[@andrewanderson3572]

That's amazing that all the technology and engineers made it land upright in the landing pad.😮

[@Peter-so8yh]

@andrew.... Yes, it took some practice but now it's pretty routine.

[@wendyhood1006]

What a fantastic video showing from go to woah ❤ with explanations well done guys 😊

[@lesumsi]

Awesome video! Would love to see more of this "educational" content.

[@fionakronert5060]

John, that was brilliant, so much information, delivered in a very entertaining way. Thank You =)

[@Sebastianmaz615]

To be able to control a rockets' launch and its' landing is amazing tech, imo. The beginnings of much bigger things for spaceflight.

[@riccardopozzetto1673]

Great explanation! Would be cool to see more of these videos going forward. I think they could help everyone understand things better :)

[@jonkersvideos]

Great video Das!

[@Jay-qs1ef]

"Everything can be a UFO if you're really bad at identifying flying objects" quote of the year so far

[@PUHAKID70]

Bro, I think I'm ready for SpaceX. After that great analysis and insight I am not as clueless as yesterday 😂Thanx

[@ross077]

Thanks Das, I'd personally be well in favour of more explanatory videos from NSF like this one. A well informed nerd is a happy nerd. Keep up the great work.

[@eddiedeloyjr3135]

That was absolutely awesome John.. Most people go thru life never getting the opportunity to see something like that up and close... Then to have everything explained like you did... Gives someone like me the entire package.. if you want to call it that. So thank you. If you keep producing.. I'll keep watching..

[@Magnetic275]

I have a couple of bridged I want to sell are you interested??? You bumb enough to belive space I said why not ask .

[@Gorealaracer38]

See WHAT?????? WHAT DID WE MISS? BESIDES THIS CGI SHOWING ZERO LAND,ZERO STARS,NO 'ENTRY' NO 'EXIT' 😂!! JUST EDITED CGI BULL💩 AS USUAL,AND WHOS THE GUY UR FOLLOWING??? WHO MADE HIM THE LIAR TO FURTHER MISLEAD FOLLOWERS???

[@DavidDudson]

Absolutely incredible video John. I usually go to the likes of CSI Starbase and Everyday astronaught for in depth videos like this, I don't expect the NASA spaceflight videos to be this beginner friendly, very well explained, I look forward to seeing more!

[@edwardturner1282]

Outstanding video. The genius of it all. The brilliant minds behind all this is just amazing. Well done JG. Oh yeah, I'm subscribed.

[@blueskyfield]

Great video buddy. Love it when you guys speak freely and don't read a script. Big thumbs up.

[@SpaceflightRocketShorts]

Love these types of videos! More of them please!!!

[@GooogleGoglee]

Nice explanation, and brake down. Thank you 😊

[@theodorebriggs]

This was a great explination of some things I knew, some things if didn't, and connecting them all together. Looking forward to more of this type of content!!!

[@ReelCarson]

I loved this! More please?

[@stereox13]

Yes, please consider more of these videos. This was really done well. Helps explain to my less technical friends.

[@peterlanham]

What a great video! I thought I had seen so many of these amazing landings there was nothing to learn - how wrong I was. Thanks guys. In my mind this video is worth my modest pad rat membership on its own. Please do more commentary’s.

[@chicofromph33nix64]

David Weiss interviews channel on yt and his other channel(DITRH) has the best info and knowledge on this topic

[@USAmerican100]

At VAFB SLC-4E the flame bucket would direct hot exhaust from Titan III and IV rockets onto a hillside across from the pad 1000 feet away. In summer and fall the hillside would catch fire. Base FD always plowed a big firebreak around the area before launches.

[@you-know-who.]

Loved it. Good to see you guys stepping up the game👍

[@nikkismith8750]

Brilliant :D love this style of educational commentary. More please!

[@furrysentinel2481]

This was an awesome examination of the video. Explains all those things we see happening one after the other. The mechanical choreography of this rocket is magnificent. Yes, please do more analysis :)

[@0r4ng3p33l]

Doesn't quite explain that mouse in the vacuum of space

[@mariodavis3058]

I really enjoyed your commentary on this video. It was very informative and just really cool fun facts to know about all the workings of a take off and landing. Good job nerd. I've subscribed. Lol

[@shanemeyer9224]

I gotta say even being a pretty decent space nerd I was always curious and confused about how they could pull off a boost back burn even reading the science but this visually confirms it for me I didn’t realize the spent almost none of the first stage going horizontal and almost entirely going vertical so killing off the little bit of horizontal velocity actually seems much easier and makes more sense, looks like the basically stop going horizontally completely and fall almost straight down to the launch site, it’s still just so freaking amazing and gets me every time I see a rocket flip and come home