The Solar System Explained | SciShow Goes to Space

[@YOOTOOBjase]

A whole Sci show on SPACE?! My initial reaction before I remembered I'm subscribed already

[@shandya]

Lmao same

[@chiblast100x]

Right?! I tend to watch all the Sci-Show channels, but Kids which I don't watch, as though they weren't separate channels only to occasionally be reminded they are, in fact, each their own thing.

[@ellenbryn]

I'd love a tour of, say, the biggest five Plutoids, because a lot of Pluto-fans don't realize that part of the problem was that we started finding a lot of other Pluto-sized worlds out there, and we didn't want to have to make schoolkids memorize ALL of them! (Also, Pluto is smaller than most people realize; seeing it superimposed on a map of the US is surprising.) Besides, more people should know about Haumea. It's nifty! :)

[@notyesbetothefallssorcerer3272]

Know enough about the solar system, it shouldn't be a requirement to learn it about it in primary. If we we're talking about common sense, maybe, it's not easy to get over there. I prefer life skills and moral overall. Maybe better yet, help the kids find their passion and get an early start on it.

[@christinedrummond4040]

@@notyesbetothefallssorcerer3272 what if their passion is learning about the solar system and outer space? smh

[@notyesbetothefallssorcerer3272]

@@christinedrummond4040 at this point, I want a school completely dedicated to astrology. Tho for general stuff in primary, it should be summarize in a book that all students can lift with ease.

[@Jellyman1129]

The data is what the data is. The Kuiper Belt is full of small planets. It doesn’t matter if school kids can’t remember it, just get used to it.

[@joshyoung1440]

​@@notyesbetothefallssorcerer3272 what... what are you talking about. You should try making a whole point before starting a new one

[@sensibleb]

I hope there are similar promo videos for the other SciShow properties: Kids, Psych and Pee.

[@lightron4732]

Especially for the last one

[@ArturBriones]

We already had one for psych

[@clancyrosenberg614]

Did you guys know that pee is like pokemon? They're both stored in balls.

[@oldcowbb]

@@clancyrosenberg614 they aren't, sperm on the other hand ...

[@clancyrosenberg614]

@@oldcowbb hah you must be one of those bladder believing fools. Everyone knows pee is stored in the balls.

[@c.g.silver8782]

The SciShow multiverse does crossovers in itself 👍🏻

[@user-wb8pp4tk8c]

I genuinely and honestly think that the possibility of being the only intelligent life in the universe is scarier than being one of many.

[@robertgraybeard3750]

X - if we are the only intelligent ife, . . . we'd better be careful and survive to spread throughout the galaxy.

[@ashardalondragnipurake]

being alone wouldnt ad any more dangers then being not alone its sad i guess but im not sure why it would be scary the idea of there only being one other intelligent life, thats a concept with a lot of scary but unlikely options and if we are the only intelligent life there is no reason for us to be the only ones forever so there is really no reason for it to be that relevant time will time on if we die

[@user-wb8pp4tk8c]

@@ashardalondragnipurake fear comes from other things than feeling like you're in danger... the idea of being essentially a fluke of self awareness in an large, empty and infinite galaxy is horrifying in an existential way. its a curse of solitude. so, again, i stick with my statement that it would be scarier to be alone.

[@justalonesoul5825]

@@user-wb8pp4tk8c ignorant comment, and your fear comes out of ignorance. Like it was well stated, if we're the only one, it might simply be that we are in fact the FIRST one. That is in fact a very serious hypothesis.

[@Omnifarious0]

I hope SciShow space isn't in trouble.

[@curiodyssey3867]

What do u mean ..?

[@abhinavbhise3816]

@@curiodyssey3867 because they are using this channel to promote scishow space there's a chance it might not be doing that well and thus to get more viewers to check it out this video was posted.

[@Cashman9111]

I wouldn't say so, it has on average 100k views on video which isn't that much lower than this channel

[@jean-lucchoiniere5587]

It’s likely it’s doing well and they don’t share a viewer base, so they could be wanting to get more of the audience to be cross subs.

[@Omnifarious0]

@@Cashman9111 - I should've checked the numbers first.

[@funnygrunt_o7]

“Some of you have never seen sci show” Welcome to the cool people club

[@EliteVeyron835]

"We are not metal enough for Venus...yet"

[@paulgibbon5991]

One interesting possibility could be dropping a probe that takes the form of an balloon or dirigible. The thick atmosphere would let it carry a large payload for a long time, and the temperature would only be moderately hellish.

[@katyungodly]

I used to be a Christian (devoutly so) and based on the people I met in church I'd be willing to bet that at least a few Christians believe that hell is on venus. Many believe it's inside the Earth. I'd say most believe it's in another dimension.

[@toshomni9478]

They don't have to land on the surface just to learn a lot more about the planet. Just having an orbiter would be very useful.

[@Krystalmyth]

@@katyungodly Did a single one of them contemplate the possibility that the only place known to contain the concept of Hell, is within mankind?

[@wasabista1613]

I wish you guys would stop taking off your scientist hats and putting on your social engineer hats to push the global warming trope. No, Venus has little to say about the greenhouse gas effect on Earth. Carbon dioxide is a trace gas on Earth, much less than 1%. On Venus, it's most of the atmosphere, and that atmosphere is 60 times thicker than Earth's as you point out. A very weak greenhouse gas gets a lot stronger at that density and pressure.

[@militantpacifist4087]

You should make one about the moons, the asteroid belt and the Kuiper belt.

[@joshbobst1629]

"At which point it disintegrated." Me: "awww"

[@bryanandrews5214]

30:13 omg I'm so mature, I laughed my ass off when she said, "Let's take a look at Uranus first"

[@adamqazsedc]

LMAO

[@Krystalmyth]

She knows what she did lol

[@jho2646]

Same for "fly by Uranus" 😅

[@RangeRoad.Photography]

Great episode, made me realize how I've been watching you guys for quite a few years now. Keep up the great work👍

[@Chromia1]

We love you SciShow!

[@JimBear]

Nice video, and nice evolution of Reid into his current form, which happens to be my favorite.

[@snowballeffect7812]

Reid through the various epochs of scishow space!

[@MaryAnnNytowl]

Reid? Might want to edit that, SE.

[@snowballeffect7812]

@@MaryAnnNytowl Is his name not Reid? Reid Reimers?

[@h7opolo]

petition to officially change the name of the planet currently known as "uranus," please. i dont know what substitution to suggest, but i'm sure there're some great options. 30:13

[@Hawks1-2-5]

Futurama had a good substitute.... urrectum😜lol

[@gljames24]

George

[@svenmorgenstern9506]

I'd go for "Canada", but it's already taken. 🍁

[@StephanFitzgeraldTay]

we just need to pronounce it correctly. It's a Greek word and wouldn't be pronounced like Your-anus, but more like Oo-ran-os.

[@Pxslz]

I love this channel and sci show space. I don’t miss many videos

[@RotcodFox]

I love videos that discuss the mysterious dwarf planets in our solar system

[@juice8292]

I AM SOOOOO HAPPY I FOUND THIS SITE ❤️ YOU GUTS ARE COOL, KEEP UP THE GREAT WORK

[@joshyoung1440]

Not a site, a channel

[@daydreamer226]

Another thing about the planets. Any one who watches sci-fi knows that whenever you pan out from Earth, all the planets are lined up in military fashion. i.e., you always see Mars, Jupiter, Saturn, etc. without fail. Those planets are good little soldiers

[@tenzinrigdol5936]

Did you know “terraforming” was a term coined by a sci-fi writer.

[@joshyoung1440]

Literally just posted a comment asking about this! Which writer? Because I remember as a kid seeing a Yu-Gi-Oh card called Terraforming, and googling that word, and finding absolutely nothing. So I'd love to know the oldest reference lol

[@EmeraldArchive]

Spaceballs

[@lachiem]

Thanks for the important info, MrBigSweaty

[@EmeraldArchive]

@@lachiem you're welcome random citizen

[@TwinMillMC]

PISS PISS POOPY DOODY PEE PEE

[@jaheim1872]

*giant space balls

[@degummybear]

Hmm yes good point 🧐

[@charlesbarden2970]

There's some serious theories around creating a magnetosphere for Mars. My personal favorite of which is just placing an artifical one at the Lagrange points to do basically the same thing with a much smaller magnetic field.

[@saladparfait]

Alternatively, push Mercury to spiral out until they collide, and hope we don't get caught in the crossfire. ;)

[@xenicmark]

@@saladparfait 🤔ally thought never actually thought of that. How about drilling to its core and detonating a bunch of nuclear bombs?

[@DrJALAGHARI]

Thanks for sharing such useful information through this amazing video.

[@Makimono]

It’s thanks to this video and the comments below that I now know of other scishows. I’ve been missing out

[@MaryAnnNytowl]

Hank also makes a cool channel called Into the Microcosmos - definitely worth checking out!

[@johnbradley1139]

"Deep sea submersible" + "dangerous" has aged accurately. #Titan

[@rhys69420]

I was looking for this lol

[@dragonangel1786]

I can't wait for the show on the moons of Jupiter, then another on those of Saturn.

[@robertvirnig638]

I was somewhat disappointed that this video only included rather rudimentary facts about the 8 planets and sun that I mostly already knew and not more information about all the moons which are much more interesting.

[@boepsie8975]

already watched all of these but I don't mind a round 2

[@elongatedcarp6309]

Hi hank, I think science is pretty cool and neat too 🙂

[@stirgy4312]

"Let's take a look at Uranus" 😆 I'm a child...

[@malachichampion]

That's the one that got me! 😂

[@gromhl5901]

Yeah.... I looked for this comment to though soooooo

[@kraziecatclady]

So, I get it when it comes to planetary exploration that Venus' atmosphere is very hazardous to human life. Another consideration is Venus' rotational speed. It rotates much slower than Earth, meaning that there is a lot more time for radiation exposure on the planet's surface in each area in comparison to Earth. That being said, Venus has an atmosphere, Mars has one too, but it is much thinner than the atmosphere on Earth and based on physics related data, Mars also has a much harder time holding onto an atmosphere in comparison to Earth. This means that if we wanted to colonize Mars, odds are that we would need to live inside of domelike structures or something similar to hold in an atmosphere that is required for human life. Use of bacteria, plants, animals, and other things could be used to create a biosphere which would recycle and regulate the chemicals required to sustain life on the planet. Powerful computer calculations would probably be needed along with many sensors to determine the required output and quantities of species to keep things in the ideal range to sustain life considering it would only exist within the domes. Removing the domes would run a risk of solar winds blowing away a lot of the artificial atmosphere that we would have created to sustain life on the planet. What I don't understand is that right now, people are really focused on climate change. There is a lot of data that suggests increasing CO2 levels in our atmosphere may pose a threat to life on our planet. Venus has too much CO2 along with other chemicals which make the planet too hostile to sustain any Earth based life forms. But, it seems to me that Venus could be used as a test model of atmospheric based climate change. Think about it, if we could modify Venus' atmosphere to sustain human life, we could resolve our own issues in the process and understand how to modify Earth's climate to maintain an ideal atmosphere. Another potential use for Venus' atmosphere is as a harvesting point which could be used to generate an artificial atmosphere for Mars without risking the depletion of our own Earthly resources. It would be an expensive endeavor for sure, but it would be much safer than risking effects related to depleting our own atmosphere in the attempt to colonize Mars. When it comes to Venus, another thing to consider is that we don't need to be on the surface to inhabit the planet. There are areas within its cloudy atmosphere which could likely support Earthly vessels.

[@zoogoober]

Just lovely. Thank you.

[@Giganfan2k1]

Honestly we need to redefine planets. Looking forward your 6 hour video. XD

[@marshalepage5330]

The fact that changes of pressure change states of matter makes me think that if an object has large enough mass it would almost always release heat at the point matter manages to get far enough away from it's core to decrease the amount of pressure on the object to the point that the pressure decrease causes the liquid to start to solidify. In other words the larger the mass the more likely an object is to heat up.

[@ashadieeyahsultana1062]

I think a good addition to the definition that those members of project Horizon suggested to make sure it does not include bodies such as the moon is as follows: The body in question most NOT be in orbit around another celestial body that is not a star. By adding that to the definition, it would eliminate bodies such as the moon, but would still include bodies like rogue-planets and exo-planets!! Just a suggestion ^w^

[@LandoHitman]

Sci-Show Space is the best Sci-Show

[@AUsernameTooMany]

Pluto will always be a planet to me. Love you Pluto!

[@cassieoz1702]

Why don't you put links to all the other sci show (and perhaps vlog brothers etc) in the 'Channels' tab of the Sci Show YT home page?

[@squirrelballer9029]

I'm sorry. I reverted to a 12 year old, when she said,"Let's examine Uranus first." Couldn't help it 😆.

[@calvindibartolo2686]

26:05 but wouldnt that put Venus' "surface" *well* above the rocky surface? or does this definition only apply to gaseous planets?

[@christophernettles2468]

When will you guys do a video on the UAP report???

[@titan844]

“Uranus” doesn’t generate much internal heat…. It made me laugh, sadly.

[@reneenayfabnaynay5679]

I thought, "How does he know? It's mine! Oh! He means the planet!"

[@itsdonaldo]

There's lots of jokes about Uranus but none about mine.

[@brindlekintales]

@@itsdonaldo Count your blessings, then!

[@briand.reynolds474]

That's pretty sad... But we all giggle on the inside a little at least, at least you can admit it 😎

[@inedibledelicacy]

@@itsdonaldo so let's take a look at uranus first ( 30:13 )

[@anuragguptamr.i.i.t.2329]

Happy Guru Purnima, dear teacher.

[@disorganizedorg]

I enjoy the compilation videos, but as science marches on it would be great to include the original release date of each video (ideally both in the video as each is introduced and in the description along with the links). The Venus one in particular I think is outdated with respect to the lack of upcoming missions.

[@ravioliis_]

these new thumbnails keep tripping me up 😭 ive been looking for this vid for the past few nights (for sleepy purposes) and i kept skipping over this one lmaooo

[@minnymouse4753]

Wonder what would be like to be advanced space travelling civizilation

[@idahogreen2885]

We ARE an advanced space traveling species

[@llYossarian]

16:58 - Thank you SO much for not saying "...begs the question" here. Just MAYBE we'll manage to "save" that one/get it back.

[@karenhackney9920]

My sons just ate up this episode. Literally glued to the TV! 😅

[@friedpancakes266]

SciShow space is also a source for space news

[@andrewspohrer7183]

Alternatively, if we simply slice up the classification of "planet" to more subcategories which would likely separate planets like Jupiter (gas giant) away from the same category as earth and include planets in their own category for planets like pluto (dwarf planet). Which I'm pretty sure is a classification system that already exists but has failed to be expanded on and refined because of the fact that humans are inherently stubborn and resistant to change.

[@johanwittens7712]

This also ignores the fact that these subclasses are just as arbitrary as the current system. And since the universe is capable of creating pretty much any kind of planet of any size with any atmosphere, composition, and other characteristics, the more planets we discover the more we'd notice that a bunch of planets do not fit our arbitrary categories. It'd be the whole pluto discussion all over again. There's just too many possible combinations, variations, etc possible. I mean, the more exoplanets we discover, the more we've noticed that even our old classification system of outer cold gassy gas giants and inner warm rocky planets doesn't even apply to most star systems out there. We seem to be again the exception. Hot gas giants close to their star seem to be much more common. Small rocky planets seem to be more rare and huge dense rocky planets multiple times the size of earth seem to be more common. We've discovered that many planets seem to be massive watery ocean worlds with oceans hundreds of km deep, like gas giants but with water. And so on. And what about Roque planets? Are they a class on their own? Or should we make subclasses for them too? Are those hot Jupiters truly gas giants? Are those Massive water planets truly rocky planets or "liquid giants"? And that's not even going into all the dwarf planets riding the line between asteroid and dwarf planet that are out there, that we haven't even begun to discover around other stars. Thruth is that any classification system is an arbitrary construct us humans use to try and make sense of the universe by trying to put things into boxes and classes. But tons of objects out there in space that could be called planets will refuse to fit neatly into our classification system no matter what, since infinite possibilities and infinite diversity is possible out there...

[@aresmars2003]

4:30 Coolest thing I learned from physics is idea of "Blackbody radiation" - the sun's 5700K temperature is what primarily determines its spectral intensity, a sort of skew-bell curve of brightness with wavelength/frequency, and the maximum brightness near the visible spectrum our eyes evolved to see.

[@Dante...]

Katelyn: Let's take a look at Uranus first. Me: Whoa whoa whoa! At least take me to dinner first.

[@chrisclifton7276]

SciShow is just a cooler version of Big Bang Theory

[@BrokebutCreative]

I honest did not know about scishow space. I have been watching sci show, pbs space time, pbs eons, be smart, and other space, earth, history etc. Channels For Maybe 2 years and not once has sci show space been recommended and this is the first I've heard.

[@shikasta123]

I love SciShow Space :D

[@clamchowderdanceparty4570]

I like the giant mirror idea the most

[@kodakincade8063]

Love scishow and all of sister channels!!!!

[@francispitts9440]

I’m already subscribed to the other channel and it’s great. I highly recommend it.

[@JesusGarcia-lw7nd]

Pluto is a planet!!

[@equesdeventusoccasus]

I actually heard about SciShow from watching SciShow Space.

[@user-lehsun-le-garib]

19:15 This sounds so good!

[@Jagzeplin]

8:32 actually there was a video, either scishow space or anton petrov i forget, suggesting that water on mercury may be generated by the sun bombarding certain atoms in the surface. wish i could remember the details

[@joshbobst1629]

This is a new version of panspermia I'ma have to think about. But this makes the Fermi Paradox even more potent.

[@Pluto137]

Continuously amazed how much more i there is to learn on things i thought i knew a 'decent' amount about😊

[@artornis606]

I did know about scishowspace and I love it

[@pjduker05]

"Let me see what Spring is like on, Jupiter and Mars." Really cold on Mars, really hot and crushing on Jupiter.

[@np8700]

“Exposphere” is misspelled in the video. I know I’m being that person, but I love these videos, and I don’t want people to misspell new words that they learn from the video, especially if the word is presented in the video.

[@lumenhart]

Just showed my mother . Not seen it before so perfect opening

[@GR..877]

Is a light year time or distance - It " normal people speak" it takes how many hours for the light from the sun to reach us and so on ?

[@wanderlustexcursion]

comprehensive and precise vedio on solar system. thanks

[@marshalepage5330]

The influence of gravity on matter and matter on gravity affecting state changes explains both why a sun would exist and why a universe would expand.

[@mandalor45]

I have been following you before sci show, Hank

[@MaryAnnNytowl]

*since before You're welcome.

[@nerdyPanda7288]

1:06 so it’s the Magic School Bus, uh, just please let this be a normal field trip. 2:12 “I’m so shiny!”

[@trustmub1]

That intro is nice, nicely evolved...

[@abdelnasermahmoud1259]

Everyone talks about terraforming as if we can achieve it by taking a paint can and spray it while landing , and magically as we land, we can all take off our helmets and space suites and breath freely. Then we wake up next morning and start farming and going to work.

[@maximilianosalvador9559]

Day 10 of asking for the return of Scishow Quizshow

[@EliteVeyron835]

Agreed please return Scishow Quizshow

[@Kenkire]

PLEASE PUT THAT IT'S A COMPILATION IN THE TITLE!

[@rikrikonius1301]

Seconded. Either in the title or a tag (or both, both is good) But it gets old clicking Sci Show links and finding out that it's a compilation of stuff I've already seen.

[@tyler7535]

Reed has a really nice voice. Also another great video, gotta love SciShow!

[@brettgt40]

I would say, to the definition change for planets, I like the direction. Maybe we should take the objects around them into consideration, though. Not as much as we do now, but still a little. While I'm by no means qualified, I'd personally change the definition to something like: "A planet is a body less massive than a star, that has never experienced nuclear fusion, is roughly sphere-shaped, and is not currently orbiting around another body that fits this same description of a planet." This would make Pluto a planet again, but leave out any moons, since they're currently orbiting planets already. Basically, The rock that's orbiting the sun is the planet, any around it should be moons or satellites.

[@Hiznogood]

For some guys, appearance with or without a beard doesn’t change much. Reed is clearly not one of them! I wouldn’t recognize him without a one, well, until he started speaking that is! That voice I would recognize anywhere! You pay attention when you hear it, that’s for sure!

[@madamsloth]

Viva la Pluto ❤️

[@anonymousfellow8879]

I for one would welcome Pluto back, apologize for Eris getting snubbed, and the Moon really is massive enough to be arguably a binary planet system with Earth. But HEY-technically being tidally locked with Earth makes the Moon Egg-shaped vs Roughly Round, so

[@marshalepage5330]

Something cold can heat something warm if the pressure of the cold thing is changing so rapidly that the cold thing is solidifying. The solidifying object itself then would release heat even if it were cold because the change of state to solid form releases heat.

[@davidhand9721]

"Watts of power per second"? Power is _already_ per second. 1 Watt = 1 Joule of energy per second of time. There is no "Watts per second" or "power per second", that makes no sense.

[@dr.OgataSerizawa]

Good point, Dave.

[@MaryAnnNytowl]

Most people aren't aware of that, and besides, the way they used it means that it's the creation or use of that much energy per second. It's not really that unusual to use it that way. It just means the amount of power produced (or used) by something. Watt dictionary entry: \ ˈwät \ Collegiate Definition : the absolute meter-kilogram-second unit of power equal to the work done at the rate of one joule per second _or to the power produced_ by a current of one ampere across a potential difference of one volt : ¹/₇₄₆ horsepower. [Italics my own]

[@dr.OgataSerizawa]

@@MaryAnnNytowl You say it may not be unusual to use it that way, but it’s still incorrect!

[@Parpyduck]

look at this sub-13th dimension pleb who doesn't grasp square and cubic wattage and laugh at him through all 9 eternities

[@tomf3150]

It simply describes the rate at which power varies. But it's useless.

[@gloffrey4968]

I dont know why you're so excited to tell me about the sun but I kinda like it

[@YayComity]

I'm undecided about this presenter.

[@milintica02]

The new intro logo is bangin! 😎

[@dr.OgataSerizawa]

Is that like.....the intro logo is sick!?

[@acidblue8111]

Hank's opening kinda made me nervous about Scishow long term

[@joshyoung1440]

31:42 okay so Uranus has a Northern and Southern hemisphere. This is despite the fact that it's tilted almost square on its side, leading me to believe that it's titled based on the planet's magnetic orientation, which raises a question. How do we know what's north and what's south far away? Can we see which way the field is flowing?

[@SoulbreakerNB]

I miss Pluto.

[@marshalepage5330]

This same concept makes me think the further away from a large mass any object gets the more likely it is to expand and move further away faster because the decrease in pressure would cause expansion.

[@ashes_menagerie]

Thanks Hank 💗

[@morganwhite4788]

Pluto is a planet. Change my mind. = )

[@VisualiseTheFun]

Fantastico video

[@spriken]

I get that Venus is much harsher but it seems if we could figure out how to fix its atmosphere it would be a better pick for a colony and maybe help us fix Earth's climate. Mars has almost no atmosphere at all, I mean if you have 2x4 it's easier to make it smaller vs bigger.

[@hardcoregandhi]

Turns out I was already subscribed, I've never seen it on my subscriptions page

[@FewVidsJustComments]

Pluto is a planet. It has few craters, and its region of the Kuiper belt is relatively empty. Its larger than Eris, the issue that started the whole debate in the first place. It has public common recognition as a planet, and past experience as one. If nothing else, its an honorary planet. It has so many planetary features that Earth has. An ocean, weather patterns, a large ice sheet, and more! And more!

[@FewVidsJustComments]

@Kyle Brinegar its not as a requirement, its things earth has too. Sorry I didnt clarify.

[@FewVidsJustComments]

@Kyle Brinegar Thats ok, I should of clarified. No worries

[@FewVidsJustComments]

@Kyle Brinegar The IAU definition for the most part is fine, but a few tweaks would allow for Pluto to be included, but not the dwarf planets (or any moons, like with the definiton that New Horizons probe launcher Alan Stern suggested). My tweaked version goes roughly as follows. A planet must... 1. Orbit a star 2. Be round 3. Have some sort of detectable atmosphere 4. Be larger than Eris.

[@tx2sturgis]

Roughly 'sphere shaped and cleared it's orbit of debris' Whoopee! My Roomba is now officially a Planet.

[@flea0chilipeppers]

The limits of human exploration is Earth’s atmosphere

[@sjoer]

I propose a new idea, our sun has a twin and it is still in the making! Once Saturn and Jupiter merge, boom have our lost solar twin!