What If Earth Was As Big As These Exoplanets?

There are hundreds of billions of alien worlds in the Milky Way galaxy. And scientists have already discovered and confirmed over 5,000 of them. Small rocky worlds like Kepler-37 b are a pretty rare find. Because they're so tiny, they're more difficult to spot. But scientists have still managed to confirm about 200 of those worlds.
00:00 Exoplanets
01:37 KOI-55 b
02:26 GJ 1132 b
03:28 Kepler-452 b
08:09 HD 100546 b
Questions or concerns? Contact us at underknown.com/contact/
Interested in sponsoring our episodes or collaborating? Email us: [e-mail]
Get our 100 best episodes in one mind-blowing book: bit.ly/ytc-the-what-if-100-book
Join this channel to get access to perks:
/ @whatifscienceshow
Get a Cameo by Peter:
www.cameo.com/whatifguy
Check out our other channels:
How to Survive: bit.ly/how-to-survive-show
Aperture: bit.ly/aperture-show
Your Body On: bit.ly/your-body-on-show
Watch what-if scenarios by topic:
Planet Earth: bit.ly/YT-what-if-Earth
The Cosmos: bit.ly/YT-what-if-Cosmos
Technology: bit.ly/YT-what-if-Technology
Your Body: bit.ly/YT-what-if-Body
Humanity: bit.ly/YT-what-if-Humanity
T-shirts and merch: bit.ly/whatifstore
Suggest an episode: bit.ly/suggest-whatif
Newsletter: bit.ly/whatif-newsletter
What If elsewhere:
Instagram: bit.ly/whatif-instagram
Discord: / discord
Twitter: bit.ly/whatif-twitter
Facebook: bit.ly/facebook-whatif
What If in Spanish: bit.ly/YT-Spanish-what-if
What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space and chance while we (hopefully) boil down complex subjects in a fun and entertaining way.
Produced with love by Underknown in Toronto: underknown.com
Contact us at underknown.com/contact/
#whatif #exoplanets #exoplanet #space #science #astronomy

[@dreamer4957]

i just love how peter throw away every planet after explaining it🤣

[@anderstermansen130]

My name is not Peter

[@YesImTaco24-7]

@@anderstermansen130no this is Patrick

[@travislocklear1370]

​@@YesImTaco24-7 I think u mean Paul 🤔

[@TF.xr.]

This guy must be massive being taller than all these exoplanets. Edit: 69 likes 🍷🗿

[@abhishekacharjee9931]

He's Galactus

[@TF.xr.]

@@abhishekacharjee9931 💀

[@ChineduOpara]

He is literally Galactus 😂

[@thunderbolt_gaming]

Galactus throat game is insane

[@taeg.4542]

lmao

[@CharlieFarrow07]

Exoplanets have always interested me and may have been the reason I fell back in love with space. My favourite exoplanet is 55 Cancri E because it’s basically a massive diamond orbiting a star over 40 light years away. Thanks for the video!

[@raijinwolf5009]

I've been a fan of science and astrology, but this is insane and I've been a fan of you for about 4 or 5 years so thank you for giving me joy about space and I want to go to Mars on day

[@Samuel_Buckley]

This isn't astrology, it's astronomy.

[@raijinwolf5009]

@@Samuel_Buckley that's what I meant 😅

[@ross.2003]

​@@raijinwolf5009autocorrect?

[@isabellind1292]

@@ross.2003 Is it just me because since yesterday, every video I tune into has me thumbing it up as soon as I click onto the video?

[@DiogenesofCynic]

I was about to ask if you are from India and think Astrology is a branch of "science" 😂

[@KL_Max_Dog]

How Big Are Exoplanets Compared to Earth?

[@mahdiahmed5589]

That's a story for another What If

[@dilanlol6046]

big

[@johnb6723]

Some bigger, some the same size, and some smaller.

[@1taeok]

They already have a video on this, check it out.

[@jackiemyers2773]

Watch the video. It's literally with the entire video is about.

[@MindWorld]

Great job, loved the video, recommend it!

[@rofaidabnsd._.]

Watching this as an EXOL.... thanks for the informations thought, i like your space and astrology related videos the most🖤

[@protzee]

Me too lmao

[@timmeijerink9504]

Nice video, i never thought that Jupiter could look as little as it did in comparison to that biggest planet.

[@renkomon.8312]

Humidity is making the outside feel warmer than it is. It sucks when only one room in the house has air conditioning.

[@Trifilaki]

I'd really like to hear more about the Trappist system

[@wouldinternet]

Seriously very useful knowledge.......... Respect...😊

[@Eric-Matthews_SAW2-SAW4]

Ain't it crazy how they're is always planets and stars is so big but the universe is bigger than everything 😐

[@ayushchahel7582]

Love your videos.

[@fahimredwan]

Love what if videos❤❤❤

[@Leo-pd4fc]

Exoplanets are amazing, my favourite exoplanet is Proxima Centauri's planet Proxima B. There is huge exoplanets too and planets what are bigger than Jupiter. By the way there have to be life some of these billions exoplanets in the universe. 🌌

[@conquester4890]

You may be around to witness what it looks like they’ll be able to see it with in the next 30/40 years with the breakthrough starshot I hope I survive long enough to see it

[@oliverst]

I love this!

[@Captain.AmericaV1]

Atlas has nothing on you!! Keep up the great content. 👏👏

[@Canmaries]

HD100546D and kepler 22b are my favorite

[@Magmax30]

I have an idea for a future video. What If Earth was covered with 70% land and 30% ocean.

[@ChineduOpara]

Water Wars!!

[@Bigdawgdollas]

I love science … how do they know this stuff 😭

[@ChineduOpara]

The Scientific Method and Maths. A LOT of maths.

[@Wurfenkopf]

Check Acapellascience's video on exoplanets and you'll know😉 Thank me later

[@terrellj8182]

Gravity would crush us to death.

[@a.gaurav_a.v]

like reading the distance even in miles seems hard sometimes and here we are talking in light years woahhhh

[@cs77smith67]

Imagine an ocean 400 miles deep 😱

[@ChineduOpara]

James Cameron would be fully erect.

[@Rossanna2000]

Or a mountain 200 until >300 kilometers tall 😅

[@kamalprem511]

Scene turbo 😮🎉

[@natalemete5506]

For another What If, What If we can make sun's? We can make planets abitable with our sun?

[@nisarshaikh5664]

Nice video

[@darthvader0219]

HD 100546 B is actually around 20 times the mass of Jupiter. It it were 750 jupiter masses, that planet would have turned into a star

[@Stellar1290]

Its mass is actually over the place but the most popular estimate puts it at 17.5 Jupiter masses, and HD 100546 b is shrinking, it is shrinking because its a relatively new celestial object and its really hot because its still technically in its forming stage so overtime when it cools down it will start to shrink because the hot gasses surrounding it makes it density really low so when it cools it will shrink into something jupiters size

[@factstipsnaija.Knowledgeisfun]

One day we will get there!

[@orlando.original]

How do they know how far away the planet really is? How do they know the difference between its actual distance and size by looking through a telescope?

[@PandazGT]

They used satellites

[@ChineduOpara]

Magnets.

[@imonit4272]

Math, light, lots of assumptions…and more than a few giant leaps. Never lose that healthy skepticism….

[@jermainejudge7508]

I always wonder about that as well. How can they know these exoplanets true size and what they are truly hiding on their surfaces

[@dlsykesii2893]

They don't. They have to retract info that they have found planets, all the time

[@dregorerampin7439]

This is interesting

[@gionezshepherd5257]

😂 always very funny

[@singhsgaming9402]

Hello, I have purchased your ebook . But havent recieved any ebook in my email.

[@suncitycybercafe3739]

i love WHAT IF

[@LuisFCruz-ov5mn]

Can you do stars next?

[@slayergodgaming1424]

5:05 wait why does the 2 keplar planets have the same name?

[@subhashreemukherjee8326]

Kepler-138B is beautiful in colour

[@Grantski2007]

Hundreds of billions 😂

[@jackiemyers2773]

Yes hundreds of billions, look it up.

[@Grantski2007]

@@jackiemyers2773 don’t need to look up anything they’re still counting with 4 digits not 12 🤪

[@helpmereach7ksubswithoutan523]

After watching this video, I kinda want to get more into science and space things :0

[@AaronThunderstorm9803]

He throw away Mercury😂. (Mercury) Oh no!!! And he throw away again😂.

[@easysolution9005]

Great video with a lot of information. The only thing is the title does not fit the video.

[@anuragtumane5227]

Planets supporting life like Earth also exist in the universe.

[@-Gunnarsson-]

I dont count gas balls as planets.

[@ayushchahel7582]

Big fan from India

[@exoplanet6002]

Glad to talk about me but too bad no space probe can reach me as i am too far out

[@xagzu]

real talk

[@NanobanaKinako]

Imagine what if the biggest exoplanet is in our Solar System replacing Jupiter.

[@BIGGDADDYWIGGS]

They can tell Us any figures, it not like we can go there with a Tape measure and be like, "Nope, it's only two times as big".

[@movitrivia]

'Fascinating! I would love to know more about these giant planets and what their effects on the universe might be

[@fitness_roofer3379]

The biggest planet is like facing the final boss you gotta defeat

[@Goldenzeno]

What if we were a type 4 civilization

[@shajibsr4384]

Everyone should watch your videos.

[@protzee]

I see exoplanet i click!

[@dink7278]

Since I was a youngster, I've always had a keen interest in science. I almost ventured into astronomy as a profession. I grew up at the U. of Georgia where my parents pursued their master's degrees. While watching this presentation, I was disturbed at midpoint. The presenter veered off the topic to address climate change. He stated, "Speaking of lifeless worlds, well that might be what earth becomes if WE DON'T STOP climate change ..." STOP CLIMATE CHANGE? This is an important topic but no earth scientists worth their degrees would SCIENTIFICALLY agree to this statement. Climates have ALWAYS CHANGED AND ALWAYS WILL whether people exist on earth or not. To make a bold an arrogant that we have the power to STOP climate change is not science!

[@judenjilah7996]

The last one is not a planet, it's a star. Anything with mass ~80 times Jupiter masses is a red dwarf. Talkless of 700 times jupiter mass, that's a star almost the size of our sun.

[@josephkihanya9545]

Just the comment i was looking for and you are very correct too... anything between 13 - 80 Jupiter masses is a brown dwarf

[@bamsemh1]

What if you accepted that the universe is endless and constantly expanding, so therefore there's no biggest thing because we haven't even explored a microscopic part of the universe 🤔

[@MavenCree]

Why are these all Kepler? How many plants can be named after (I'm assuming) one person?

[@Stellar1290]

Its because they were named after the Kepler telescope that found them

[@WhatDoWeKnow10]

where does he get all the clips of plants and stuff? 🤔🤔

[@tamaraokoth2647]

Peter I love your shirt

[@special5513]

4:18 This Exoplanet could be the place where we could live in the future, if earth is dieing because of human activity. We only need a shace shuttle to fly with lightyears per minute. That could be the best way. 👍👌

[@beatsmithx1090]

What I don't understand it... Why does the eaten planet doesn't just get pulled to the star altogether? Why does it have to be pulled and stretched like that? It's kinds like something is also trying to prevent the planet from approaching the star. I've heard about this in lots of other places. The movie moonfall also shows it. Instead of the whole moon to just fall on earth, it's broken apart piece by piece towards the earth. Is there some kind of force that pulls the planetary body away while it approaches the body with the higher mass?

[@albrand591]

You need to add U.S. standard system with the metric system

[@user-ft4mv1je6o]

can you please do what if we fall from the sky fast

[@ChristopherWilliams-uv1il]

The earth will always be fine. It's human life that won't.

[@wildyato3737]

Not until Red giant phase or a century😂😂

[@JesusGonzalezzz]

2:07 We have a beautiful planet ❤

[@nateg08]

I love how he started showing himself in his videos since his little beef with kyle accusing what if of being AI generated.

[@JoelTorres-yx3hm]

What if bees were the size of humans

[@ChineduOpara]

Well, no biggie cuz they wouldn't be able to fly.

[@user-cc5mn1fq4u]

Scientists just let the cat cross the keyboard and that is how they name planets

[@LadyZewe]

I like how you mention fighting against climate change. Thank you. 🙃

[@TheMightyCookieShow]

I have come to believe that when we finally can detect life and do it easily that we're going to probably find some form of life really just about anywhere we look on any planet in any part of space. I'm thinking like micros and things like that at the very least literally everywhere we look without exception

[@LarryBeeswax]

My guess is that with all the other solar systems out there, there has to be a Goldilocks planet that have advanced species that are beyond microorganisms.

[@ChineduOpara]

I'm thinking worms. Microbes and worms.

[@cody-gf8zb]

Here's the thing these are all just theories we have absolutely no way of actually knowing any of these things because we have never been there and only observation from telescopes

[@DavidBrown-vi9ik]

That doesn't stop people believing in God 😅

[@DetteCastro-bz9io]

I like keper-22 B if says that also what if😊

[@wildyato3737]

Even we arrive at Mars...will be a breakthrough history...😂

[@mustafabilen3696]

I went from How to survive to what if

[@WeltSchmerz1349]

Imagine the lifeforms that could exist f.ex. on that super gigantic exoplanet that is many times bigger and heavier than Jupiter. H.P. Lovecraft knew what he's writing about, there must be monsters even scarier than Cthulhu or Yog-Sothoth ,,,;,;,,,

[@nazxa]

Okay

[@macwelch8599]

What if we could travel forward in time and watch animals evolve after the extinction of humanity?

[@LarryBeeswax]

Honestly if we go extinct, that means we took all the other animals with us. Maybe the roaches would survive.

[@ChineduOpara]

We are always traveling forward in time (at the speed of 1 second per second). I think what you mean is, what if we could time-skip to the future.

[@puchaygaming3445]

How they manage to measure those planet

[@yousawmyusername7769]

Im sorry but if HD 100546 b was 750x more massive than Jupiter, it would be a star because you only need about 80 jupiter masses until it starts fusing hydrogen. It would also be 72% the size of our sun in terms of mass.

[@sabyanilu]

If i were the size of ¼th universe then i would have ate the galaxies considering them as energy particles

[@chesterholland5909]

What if we can light up fire to provoke thunderstorm?

[@kagehikari4563]

this is random but I just saw some article about aliens are not from space but just in wide ocean I mean in a very deep and dangerous area or place that no human can survive.....especially that slimy likeness of aliens from the sea creature ..

[@wasanghanim3945]

HD 100546b Is Simlar In Size To The Sun But This Planet Could Be A Brown Dwarf

[@michaelhenson5396]

What if we created a earth like planet using Jupiter's and Saturn's moons?

[@freezingknight4753]

How do you calculate a planet's mass which are light years away ?

[@ZAYMANGAMESTUDIO]

Good question.

[@Stellar1290]

They can look at how much the parent star wobbles, they can see it wobbling due to the planets gravity they can see this based on the star flickering and blinking when observed, and they can estimate the supposed planets gravity based on its stars behavior and how much it flickers and wobbles and they can create an estimate how massive the planet is due to the gravitational influence on its star

[@hamzapashton2540]

There's no planets that support life better than earth no matter where you go no matter where you look

[@hamzapashton2540]

Everything's that you know Everything's that you see it goes with clock

[@Fancystrongnoob]

Dang

[@anujjagtapaj]

What if we try to plant tree on the moon and supply it water is that works...?

[@joaopauloalmeida6269]

eu amo o espaço eu vim de outro mundo

[@superherostepdad]

KOI-55B is Mustafar

[@DeadlyMongoose1]

What if everyone moved off the grid (to the wilderness).

[@RC-ie5ru]

Was the question posed even answered?

[@sentzzjmr6871]

Please make a video on what if everyone is a billionaire ! .

[@ChineduOpara]

That's not how wealth works... the currency would be useless.

[@BryanSantos-cf1kk]

Earth as big as the exoplanets would be more land than water

[@cmorichie7202]

I like Sci-fi too..

[@dadafgf9360]

Did he just toss earth 😅

[@sayantanbanerjee4602]

Why HD 100546 B has not become a star with that huge amount of mass ?

[@ZAYMANGAMESTUDIO]

Good question 🧐

[@mandara3841]

Astrophysicist we need an answer!

[@Stellar1290]

Because it can’t, it doesn’t have enough mass most reliable estimates put it between 10-17.5 Jupiter masses so its not even close to becoming a star and HD 100546 b isn’t a planet at current estimates its rather a brown dwarf, a failed star

[@mandara3841]

But this more than 17times mass of jupiter, is more than 700times

[@Stellar1290]

@@mandara3841 its not, thats an impossible estimate 700 jupiter masses would be equivalent to a K type star and HD 100546 b is a brown dwarf so its around 10-20 jupiter masses

[@brucekent1886]

Why are these cosmic bodies, planets Suns/stars circular in shape? why arent there any square, rectangle or triangle planets, suns/stars?

[@Tiarka]

Human beings would evolve into snakes on a planet bigger than ours…if our lungs aren’t crushed first.

[@user-yq4yz7dt1l]

HD 100546 b will shrink in the Future to the size of Jupiter😀