Collision of planets with gas mantles

Two planets with solid cores and gas mantles collide at various impact angles and speeds. The mantle is intentionally much more transparent than it would be in reality.
Computed with SpaceSim
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[@antred11]

Request for future simulations: could you visualize the passage of time so the viewer can better understand what time scale we're looking at?

[@Space_User_15]

The fancy simulations don’t have that.

[@antred11]

@@Space_User_15 What do you mean? I'm not following.

[@randomhi848]

@@antred11 he means that the simulations you see dont have it

[@petterlarsson7257]

@@Space_User_15 what

[@HistoryOnPaper]

Just download open sph your self it’s free.

[@cricket-lt8nc]

FINALLY. I have been wondering what a realistic gas giant collision would look like. So many simulators make it look like a regular collision between terrestrial plants. I get that computer processing plays a role, but still.

[@lajoswinkler]

It's not realistic because it misinterprets what _gas_ in gas giant means. These objects are not gaseous just because they have hydrogen and helium mantles, and their cores are not solids just because they contain silicates and metals (so called _rock_ ). These names are for chemical compositions, not states of matter.

[@kingofflames738]

The simulations of rocky planets colliding is pretty much the same with minor differences. At these scales any kind of collision will look much like two liquids colliding.

[@nalasprincessworld4670]

but gas giants can have solid cores silly

[@cricket-lt8nc]

@@nalasprincessworld4670 No I get that but the gas seems like it would "flow" more in a less explosive way. Although according to some of these comments more research may be necessary on my end.

[@deltainfinium869]

The collisional moons this generates raises an interesting question: Did the gas giants once have much larger 'gas dwarf' moons? Could some moons of gas giants today be remnants of such moons whose hydrogen envelope got destabilized somehow? And could exoplanet systems have gas binary systems that were generated in this manner?

[@BB_Jo-e3z]

if the flugout companion planet has enough mass to hold the atmosphere , not in the Roche limit with a stable orbitand can wistand solar wind, then a gas dwarf binary might exist

[@babynautilus]

that's an interesting thought! like a super jupiter with a saturn moom😮

[@jarls5890]

Saturns moon Titan would be close to what you describe here. The only moon we know of with a substantial atmosphere. Second largest moon in the solar system and almost as big as Mars. I guess one issue with smallish gassy moons is perhaps two-fold, temperature and gravity. Too little gravity and the gas will quickly be lost. Too low temperature and the atmosphere freezes and falls down on the surface either as a solid or a liquid. Perhaps why Jupiters Europa is as it is.

[@bg1052]

Could be the case. Even our moon is theorized to have had a thicker atmosphere than modern Earth's soon after it was formed, though for different reasons obviously. There's nothing to disprove that current moons could've been "gas dwarfs" at some point. Though it would go against our current theory on how they were formed. We think they weren't formed by collisions any of the gas giants experienced, but by small scale accretion disks the gas giants once had.

[@williamsanders2439]

The thing is, once planets get to a certain size, anything that they gobble up, they tend to cling to that mass and it tends not to expell into stable orbits. Also, when they're forming, they tend to get VERY hot, and drive off any gas outside its Roche limit. This is why Jupiter's moons don't have significant atmospheres...Jupiter would have looked like a binary star because it was white hot billions of years ago.

[@inquaanate2393]

Sim request, two brown dwarfs fusing into a large enough star to start fusion.

[@imnotthatmatt6524]

Request: make this video at least half an hour long. I love how soft and fluffy these sims look and I’d love to watch them stabilize over time

[@aniketdebnath3082]

20 years ago who would have thought that this kind of simulations can be done with out a super computer.

[@SpaceSheb]

i mean 20 yrs ago a regular laptop would be close to a supercomputer

[@logitech4873]

​@@SpaceSheb uh no

[@SpaceSheb]

@@logitech4873 prove it. scientific papers, screenshots, photos, even dlsr camera recordings, send stacks of papers to where i am, and even hard sources.

[@likefrim]

@@logitech4873 do research

[@blahbleh5671]

@SpaceSheb sorry you were dropped at birth

[@rozzgrey801]

Could you do a gas giant colliding with another gas giant with a ring system like Saturn's? The way the rings would warp would be fun to see.

this is so cool to watch, we are used to see static images of the universe

[@tygical]

remember however that if this happened it would look fairly static becaude it would take a really long time

[@DreadEnder]

This is even more awesome when you look at it from a mechanical perspective.

[@javinshki17000]

thats so crazy, the first simulation produced a huge gas moon

[@Versuffe]

Amazing work, pavel! I really hope I can get myself the patreon soon so I can get access to this in the future.

[@Pasikoniszek]

Head-on collision was incredible!

[@kedwyd6535]

0:06 *Hollow Purple*

[@CyclopsRat]

Those head-on collisions are stunning

[@thatrandomdude_404]

Always making great simulations, as usual

[@Lavafire1]

I love space and I can’t believe I never thought about what happens when gas planets merge

[@jadenpietrzak2509]

I love how this video let's it play longer

[@useruser2-bf5yx]

This will affect 1 bird

[@HeadsetHatGuy]

this will affect the trout population

[@Daimo83]

Rock looks like fluid on a fast enough time scale

[@jonathanmabardy]

That first planet is going to have one hell of a moon

[@cliffordchristopher1]

I am so completely impressed. Thank you so very much.

[@spaceguy20_12]

so cool! the second collision also made a moon with a thick atmosphere!

[@johnarizona3820]

Sim of our solar system would be very interesting.

[@Deutritium93]

Looks like two cellular organisms merging.

[@kingofgames0304PSN]

Much thanks to the person or team who took the time to record this.

[@Animagar.]

Just imagine how much time!

[@kingofgames0304PSN]

​@@Animagar.The team must've been there millions of years recording this in person.

[@AnimatorAOfficial]

It looks beautiful and horrifying at the same time,imagine your an astronaut exploring deep space and see this 0:35

[@RadioEndTimes]

Gas manlets gonna get whats comin to em

[@WP_offical_channel]

video + music = perfect!!!!!!!1

[@cameroncalzone8860]

imagine a gas giant surrounded by moons of gas, like little bubbles surrounding the big bubble

[@user-ry4si4te9i]

Why is it so satisfying to look at

[@GabeTStarman]

Very interesting! I appreciate the work put into this simulation, though unfortunately I had to mute the video. I personally find this type of music to be extremely annoying.

[@legiran9564]

Any chance in seeing white dwarf and neutron star collision simulations?

[@maxdepasquale2351]

hmm, intriguing but I suppose that one should take into account that we still know relatively little about the properties of the matter there. Still, good shot.

[@BDJones055]

I couldn't hit subscribe fast enough. I always dream about what an animation of the original star exploding, the one that gave its matter for pur solar system, would look like. I wish I could visualize the clouds of matter from the explosion, drift out and eventually coalesce into our solar system, with its brother and sister stars growing in the relative nearby vicinity. I wonder what their life is like?

[@Ion115]

0:25 That's a one huge dumpling

[@farmiap]

Looks very cool

[@pantheracheaxb747]

It would've much more interesting if the gas isn't attracted to quite all the debris. Especially the moon on 1:10; felt it'd be more natural if it can't capture any gas as it'd be also heated up as much as the gas giants would after impact, and its density is obviously way less than the gas giants even before merge.

[@TlalocTemporal]

Proper phase changes would be interesting in general, especially for free floating gas heated by the sun. How much of that ejected gas would simply be blown away?

[@wernerviehhauser94]

Really nice work!

[@lexdeobesean]

That was quite dope!

[@davidci]

Somehow, head-on collissions are the least 'messy' collisions

[@zenlikestate96]

Id have to imagine that the head-on collision is pretty frickin rare. In the vast expanse of our universe im sure its happened at least A COUPLE times, but its certainly not a common occurance.

[@third16273]

Bro made a lot of moons 1:17

[@user-xg5me9rx7z]

All I could think of was "ignite, ignite little star!!!"

[@declanandollie2981]

it look very cool

[@user-fs5cm6hy6d]

0:21 galaxy like planet

[@nicholasmaude6906]

In such a collision most of the gas mantles from both planets would be stripped away and don't forget the effects of solar radiation and wind, that would blow away the stripped off gases along with the heat of the collision.

[@thaneinwe5020]

1:18 moon!!

[@kyjo72682]

Good idea with the transparency. How many particles? What kind of hw was used to simulate this and how much time per frame? (wondering if I can run this on my laptop :) )

[@r-saint]

No stabilization or rings forming? Bad....

[@TurkmenistanRepublic]

I hope my pc could handle such many particles like this

[@marlandeaster]

The moon looks like it has a ring

[@Boxy-zy2if]

0:19 bro turned into a galaxy💀

[@martinsfusteryt]

Good to know how it behaves, but could you add a slow mo before it collides like poeple do in Universe Sandbox 2, it would be great 👍👍

[@EpicMouser]

Can you do a tutorial on how to make the particles look like that?

[@halfbee7886]

God is stirring some eggs.

[@jadenpietrzak2509]

Please tell me how you made the outside transparent and not the core

[@andrzejewscy4576]

Do you ever plan on making an option for stellar evolution on the molecular cloud? Basically it goes all the way from a protostar to a black dwarf/neutron star/black hole. It would take a lot of effort so if you don't want to implement that it's fine.

[@mrrp_mrowp]

holy

[@andrzejewscy4576]

@@mrrp_mrowp what

[@mrrp_mrowp]

@@andrzejewscy4576 said that because i realized how good of a idea that is

[@andrzejewscy4576]

@@mrrp_mrowp Ah alright

[@Oxtorayk]

Awesome! Request: could you do it without the music?

[@iamnot_real1]

was that a ring or an accretion disk

[@ianglenn2821]

this makes me think that Titan was a primordial grazing impactor of Saturn?

[@janetbyrd1065]

Request: A rocky planet 5.8 times the size of Earth passing by within 20 million miles between Venus and Earth.

[@BloxyGuyRBLX]

So cool

[@BTiffney71]

I would assume, given enough mass, that such collisions lead to the formation of a star and may be how binary star systems generally come to be.

[@clintonarneson226]

Meet, greet, accrete

[@darthmemeious9526]

any microbial life in the upper atmosphere is having a blast rn.

[@justfalafel3227]

POV: casoeh farts

[@enmistikkullaniciadi3436]

i can't use the version 0.6 how can i use it ?

[@Mastermind8908]

Could Jupiter's rotation speed be the result of a similar collision with a large planetary body?

[@captainahab5522]

Would the results of this simulation change if the mantle was simulated as liquid metal hydrogen which would expand when the pressure drops and it becomes molecular hydrogen.

[@Bowiesway]

🔥

[@bilboborbins]

Just curious but wouldn't a collision of 2 gas planets be potentially more explosive under the right conditions?

[@doesntshuck]

Hey Pavel, Is SpaceSim 0.6 out yet? if not how long do you think it will take?

[@pavelsevecek]

It's out for Patrons, there is no public build yet.

[@doesntshuck]

@@pavelsevecek Thanks for the info! Because I downloaded it on patreon without being a patron, it worked for about 8 hours until completely bricking and not opening, was that because of the contest?

[@pavelsevecek]

@@doesntshuck yeah, it only worked during the contest.

[@useruser2-bf5yx]

​@@pavelsevecekIt was fun while it lasted

[@doesntshuck]

@@pavelsevecek do you think there will be a public build soon? its fine though, you can take your time!

[@kummer45]

Egg jolts.

[@JaniduS]

Wow..looks like windows 7 booting screen ☺️✌️

[@paulhaube]

Interesting, but there is no sound in space.

[@BestTheGuy]

Does it really look so watery?

[@petersmythe6462]

Titan origin story?

[@Yarnk7]

was is a gas mantle

[@sam_xd6574]

A mantle made out of gas

[@Yarnk7]

@@sam_xd6574 that makes sense

[@grandvoid6940]

@@Yarnk7 Mantle is a layer of a planet.

[@MrDino1953]

A gas mantle is the ring on your gas stove where the gas comes out and burns.

[@grandvoid6940]

@@MrDino1953 Oh yeah thats right

[@shipsun]

Sevecek, how do I get the gas feature?

[@andrewreed4216]

You only show part of the story... what about the electromagnetic discharges of two differently charged objects?

[@MaximumOffense]

Sephiroth using Supernova be like

[@datodin]

Hey, Pavel Ševeček can you add a speed controller to the game? I don't want to wait millions of years to see the planet collision result without the heat covering it

[@sacr3]

Like 2 protons colliding in the LHC

[@iilikecereal]

I could survive that if I just locked in I'm sure

[@theslayer0093]

I am very surprised by the beauty and possibilities of costomization of this program. I want to ask a question: will your project be posted in full (new versions) on platforms other than Patreon?

[@pavelsevecek]

Yes, I plan to put it on Steam in the near future.

[@theslayer0093]

@@pavelsevecek Thank you very much! I live in Russia and cannot support the project on Patreon in any way due to sanctions.

[@Foxxorangee]

I just realised, on the second collision the two gas giants created a small gas moon that sort of resembles Saturn’s moon titan. Sorry if I have started a conspiracy theory. Edit: actually all graze and merge collisions do that in this simulation just the moon formed on the second one was larger.

[@rozzgrey801]

You made an observation, a quite astute one, and one which suggests this may be how moons form could around colliding gas giants.

[@ipadize]

can you simulate the future and tell me the lottery numbers?

[@monkeysfromvenus]

Does gas really bunch up into discrete blobs/droplets like that?

[@wathah323]

Atoms, Cells, same principle.

[@surispliff5241]

Whats your spec to compute that ? With a Ryzen 7 CPU and AMD Radeon Graphics GPU i can barely run a 50k particles simulation. While i would need 1 million particles to have smthg kinda good looking

[@rayray6548]

na na na, na... na na na, na, hey hey hey, good bye.

[@AffonsoDaGol010]

Is this what would happen if Saturn and Jupiter collided?

[@Puleczech]

How about gas giant coliding with an Earth-siyed rocky planet? Greats stuff btw!

[@janetbyrd1065]

PLEASE list the music! I love it!!

[@pavelsevecek]

kzbin.info/www/bejne/fXS7mZ-MiK1_m8k

[@baladi921]

Huh. Neat.

[@BaconGamingYT08]

does space sim support windows 10 or 11

[@pavelsevecek]

@@BaconGamingYT08 both

[@BaconGamingYT08]

@@pavelsevecek and does it lag bad if a windows is old

[@MrCheeseDaBoi]

How is your spacesim so realistic

[@0silly_goose0]

bro can u make the same video but in 360?

[@bobtheplanet]

feedback when try to download for windows : can you fix the download for windows pls when i try downloading it gave me codes of textures and stuffs so pls fix it

[@My_aviation67]

Hey for future update can you make it for phone also

[@yusuf513]

I think phone can't handle it💀

[@My_aviation67]

@@yusuf513 because i want to destroy my phone for an test