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.

[@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

[@Thessalin]

I dunno, SciShow Pee hasn't had content in FOREVER. Us Pee-ers and very passionate about our channel.

[@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 ...

[@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👍

[@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 🧐

[@c.g.silver8782]

The SciShow multiverse does crossovers in itself 👍🏻

[@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.

[@militantpacifist4087]

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

[@juice8292]

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

[@Chromia1]

We love you SciShow!

[@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.

[@joshbobst1629]

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

[@JimBear]

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

[@pxssplz]

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

[@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.

[@RotcodFox]

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

[@tenzinrigdol5936]

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

[@Giganfan2k1]

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

[@zoogoober]

Just lovely. Thank you.

[@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.

[@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.

[@christophernettles2468]

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

[@squirrelballer9029]

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

[@Dante...]

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

[@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

[@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

[@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...

[@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

[@tyler7535]

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

[@joshbobst1629]

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

[@shikasta123]

I love SciShow Space :D

[@kodakincade8063]

Love scishow and all of sister channels!!!!

[@LandoHitman]

Sci-Show Space is the best Sci-Show

[@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.

[@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 )

[@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.

[@chrisclifton7276]

SciShow is just a cooler version of Big Bang Theory

[@mandalor45]

I have been following you before sci show, Hank

[@MaryAnnNytowl]

*since before You're welcome.

[@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.

[@pjduker05]

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

[@elongatedcarp6309]

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

[@equesdeventusoccasus]

I actually heard about SciShow from watching SciShow Space.

[@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.

[@tx2sturgis]

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

[@user-lehsun-le-garib]

19:15 This sounds so good!

[@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.

[@artornis606]

I did know about scishowspace and I love it

[@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.

[@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

[@calvindibartolo2686]

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

[@old_arsed_eldergoth2800]

We definitely need to do more exploration of our outter solar system! #probeuranus

[@acidblue8111]

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

[@Shit_Shooter]

I'm sorry this is totally just my opinion and I absolutely love SciShow and all it's branches and all the people working there. Maybe it's the fact that I have anxiety already but this gentleman (sorry, I don't know his name, the one at the beginning) it stresses me out to listen to him because it sounds like he's in quite the exacerbated rush!

[@Rico-Suave_]

Watched all of it

[@hardcoregandhi]

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

[@mattlapointe-smith6257]

So Mercury has stretch marks due to it’s early weight loss routine?

[@paulgibbon5991]

You've got to admit, it paid off. It's looking pretty hot now.

[@johnbradley1139]

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

[@rhys69420]

I was looking for this lol

[@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!

[@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.

[@flea0chilipeppers]

The limits of human exploration is Earth’s atmosphere

[@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]

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.

[@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.

[@sjoervanderploeg4340]

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!

[@JudyMenzel7]

I have to agree more with the new definition.

[@blakewright575]

I’m confused why we say it’s 98°, wouldn’t it be the same if we rotated it 82° from the other direction? I suppose a different way of wording this question is: how do we know which pole was north before it rotated?

[@mariakasstan]

I hope that you folks will do a segment about Immanuel Velikovsky, a rebel who has been somewhat vindicated about his book (and theory) Worlds in Collision. Thanks!

[@ethangbb]

How about we add the rule of ‘Orbiting a star’ (Optional in the case of rogue planets)

[@IHateUniqueUsernames]

If it's optional, then it isn't a condition? As you now need conditions as to when it does/not apply? So it may be more expedient and succinct to simply define better conditions. If you aim to declassify "satellite bodies" like the Moon, you could add the condition like "Not already orbiting a non-star body, e.g. another planet". This would be a good non-optional condition, imho, that makes the Moon not a planet, while not kicking rogue planets off the list. It also does the job to en/force the definition of orbiting between two bodies of very similar mass that the one of even slightly larger mass defaults as the planet.

[@tomf3150]

Rogue, not rouge. Rouge is red in French.

[@ashes_menagerie]

Thanks Hank 💗

[@BaseStructure]

Hi hank love your vids

[@grantbartley483]

How to liqufy Mars' core? Dig a big tunnel to the core then fire Phobos or Deimos or an(other) asteroid into it.

[@sirpug]

I think a planet should be defined as a body in space that is spherical and has either an electromagnetic field with a liquid core, or a solid metalic core

[@joshpittman1982]

A fly by of Uranus, childish giggles begin.

[@milintica02]

The new intro logo is bangin! 😎

[@dr.jamesolack8504]

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

[@devoshaneo]

Oooh Tell Me More About Those Potential Planets Please...

[@maximilianosalvador9559]

Day 10 of asking for the return of Scishow Quizshow

[@EliteVeyron835]

Agreed please return Scishow Quizshow

[@gloffrey4968]

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

[@1959Edsel]

18:48 Might want to cover "itslef" with an annotation.

[@wikid2ya]

Use a heated sharp front end. For giant cold planets.

[@TibbiScott]

What about more ballooning missions, like Vega, on Venus?

[@zoidbrug1989718]

24.42.. wow I mean damn

[@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.

[@madamsloth]

Viva la Pluto ❤️

[@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.

[@VisualiseTheFun]

Fantastico video

[@SmartVideosJarkaWatched]

Do you tell us 'what to call the object that Pluto currently IS' (a sub-planet? a radical moon? a hyper comet?)?

[@Frozencreek1]

amazing video. I like the new faces. also "SLEF"?

[@miaokuancha2447]

Mercury -- around the sun in 88 days. And goes in retrograde with itself. Wild.

[@MaryAnnNytowl]

Um, that's not what retrograde means... like, at all.

[@mmmmmmmmdaaaamnnnnbabyyyy]

@@MaryAnnNytowl might as well say what it means then

[@KingDingus92]

this is like when a sitcom releases a clip episode. except I watched this

[@JudyMenzel7]

Dang. Really wanted to hear about Pluto

[@AllDayBikes]

When you go to subscribe to SciShow Space , but you already were lmao

[@MCRuCr]

"Watts of Power every Second" I'm out of here

[@sandis550]

Yes watt is already in J/s so what they just said makes no sense

[@javierandres9627]

It is a valid measurement. It measure how much does power increases in a measurement of time. Think of acceleration but instead of distance it is of energy. So watts per second is just how quickly is the energy accelerating

[@MCRuCr]

@@javierandres9627 yes, but that is not what they meant

[@matiassu5604]

It's like kilowatt hour, a non SI measurement of energy, it refers to the amount of energy generated/consumed by something of that wattage during certain amount of time. It's commonly used by electricists.

[@gljames24]

@@matiassu5604 Ah yes, electricists.

[@Amocles]

You're pretty good at puns ;)

[@martinwilke1980]

At 7:19 you should write and say "exosphere".

[@emilypurdy2097]

Make a video about the dwarf planets

[@ericdidomenico8873]

This channel is awesome!!

[@keith0lsen955]

I thought molecules absorbs energy when a electron changes orbitals then changes back re emitting the quanta. Plasma electrons are liberated. @3:03

[@bryaneberly3588]

Venus is necessary for understanding a run away greenhouse effect which we are currently experiencing. How fast did it happen? Is there time to adapt to it?

[@SoulbreakerNB]

I miss Pluto.