Here is a fun animation that will help you to understand the relative rpms of the planets.

(via. https://www.tumblr.com/bandit-jay/698182172743434240/comparing-the-rotations-of-objects-in-the-solar?source=share)

Comparing the rotations of objects in the Solar System. Just look at them lol.โœจ๐Ÿช

To everyone that's confused, the planet Venus rotates very very slowly, with a single revolution taking about 243 Earth days, and Mercury rotates slowly, but not as slow as Venus.

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@futurebird Ceres is having entirely too much fun.
@futurebird this is very cool and some of these are not like the others lol ๐Ÿ˜œ

@futurebird
great idea.

but

that earth is missing Aotearoa / New Zealand ! Also no Japan, most of Indonesia missing ...

at first I thought it was just too much video compression, but Madagascar is there, so I'm not sure why so much other stuff is missing.

and I'm disappointed that Olympus Mons and Hellas basin are not identifiable on Mars. : (

Probably I'm too picky.

I use arch btw (pacman, not rpm)

(bad joke please do not hurt me)

@futurebird jupiter ๐Ÿ˜‚๐Ÿ˜ i relate
@futurebird TIL that Mercury ISNโ€™T tidally locked โ€” but Venus is!! But if itโ€™s rotating the โ€œwrong wayโ€, then how can it be tidally locked?!
@mike @futurebird Venus isnt tidally locked, it just has a very long day. Mercury used to be believed to be tidally locked, but it's actually in resonance. one solar day lasts 2 years. It just happened both of the first observations of its surface happened in the same part of the resonance.
@futurebird Is James O'Donoghue on Mastodon? After seeing this, I *really* think he should consider adding faces to his animations ๐Ÿ˜„

@MichaelPorter
ooh and frantically waving arms for the faster ones.

@futurebird

@futurebird Oh this is cool!

Also, how did I never know that Pluto had such an extreme axial tilt?

@futurebird I only learned recently how fast Jupiter spins and it blew my mind
@futurebird oh a day on venus is very long. Also their googley eyes ๐Ÿ’•๐Ÿ’•
@futurebird Do i misremember, or wasn't Mercury tidally locked with the sun? And so its face would be eternally lit by the sun? Or is the lighting here not supposed to be the sunlight?

Looks cute tho :)
@futurebird Ceres looks like a fun place to hang. Any Masto-physicists about who can tell me if we'd be crushed by that speed or just fly off into space? :D
@futurebird am I seeing this correct? Venus is moving backwards?

@TopWKone @futurebird depends on how you determine the direction of rotation. It could be โ€œbackwardsโ€ but the convention is that rotation is always counterclockwise when seen from โ€œaboveโ€ (right hand rule) and so Venus is โ€œupside downโ€. (Hence the upside down smiley face)

Itโ€™s also got a day thatโ€™s 117 earth days long, so a Venusian year is just under 2 โ€œdaysโ€ long.

@futurebird Jupiter needs to calm tf down ๐Ÿ˜‚
@futurebird but honestly this explains Sagittarius (ruled by Jupiter) so well ๐Ÿ˜…

@futurebird
Super cool!
You donโ€™t hear much about rotation speeds.

I wonder about the sunโ€ฆ?

@futurebird Jupiter is that kid who is way too into the merry-go-round. They're gonna barf!
@futurebird
This is a clip-n-save for sure.
@futurebird Pluto and Cere aren't planets.
@Bearded_Pip @futurebird
Dwarf stars are stars.
Dwarf galaxies are galaxies.
Dwarf planets are planets.

@futurebird
1) Venus doesn't spin at all?!?

2) who let in Ceres? ๐Ÿ˜†

@acm_redfox @futurebird Venus spins but so slowly (see the figures) you don't notice immediately.
@futurebird Surprise is how the big guys move so fast. I would have thought they'd be the slow ones.

@futurebird I love this so much!

@gwynnion thanks for letting us know about it.

@futurebird there are 8 (9 if you count pluto) planets in this illustration, not 7

@ellenor2000 @futurebird If you count Pluto, you should count Ceres, too. And Eris, and a whole bunch of the other dwarf planets.

But that gets to a crowded illustration, and Pluto and Ceres are the ones with the best- imaged surfaces.

@futurebird Venus is "not" moving right or it is the slothest of them all!
@futurebird is the "not" rotation of mercury and venus with like looking from the sun at the given planet or looking from a very distant star at the planet? (as they also move around the sun at the same time)
@futurebird
๐Ÿฅฅ Great graphic of planetary rotations, myremepropagandist.
Look at #Uranus being the class clown! ๐Ÿฅฅ
@futurebird ๐Ÿคฃ Amazing!
@futurebird It's even funnier when you consider the size of Jupiter compared to something like Mars or Ceres ๐Ÿคญ
@futurebird Just look at Jupiter go! ๐Ÿคฃ
@futurebird
Now I'm wondering how our Sun's rotates relative to her major satellites.
@futurebird Should add Haumea to this! (Rotational period 3.9 hours).
@futurebird I'm definitely a Mercury
@futurebird slowly I turn, step by step,...
@futurebird so if i would stand in an EVA suit(a very good one) on Venus, the sun rises in the west, and sets in the east ๐Ÿค”
...it would be a very long day ๐Ÿ™ƒ
๐Ÿ˜‚ the eyes ๐Ÿ‘€ ๐Ÿฅฐ
@futurebird I didn't know Jupiter spun faster than Earth!
@futurebird ๐Ÿคฃ mercury is now my favorite planet
@futurebird
love this!
๐ŸŒš๐ŸŒ๐Ÿช๐ŸŒ
@futurebird I love things like this that help put things into perspective 

@OkieSpaceQueen

I hope your audiences are already seeing this!

@futurebird

@futurebird
So can one assume that any planet which does not have the spin axis at right angles to its orbit, has taken a very heavy impact at some point in its history?
E.g. Earth wobbles because it was hit by Theia some 4.5 billion years ago.
@futurebird ๆ€ชไธๅพ—่ฆ็™ป้™†็ซๆ˜Ÿ๏ผŒ่ฟ™ไนˆ็œ‹่ตทๆฅ็ซๆ˜Ÿ่‡ช่ฝฌ้€Ÿๅบฆ๏ผŒ่ฝฌ่ฝดๅ€พ่ง’ๅ’Œๅœฐ็ƒ้ƒฝๅพˆๅƒใ€‚
@futurebird Jupiter going โ€œWheeeeeโ€
@futurebird Fun fact: A day on Venus is longer than a year on Venus
@futurebird Venus wins the staring contest!
@futurebird damn, Jupiter goes fast

@futurebird

++ for including Pluto and Ceres

@futurebird Are Saturn and Jupiter rotating so fast because they are gas planets?

@latca @futurebird @futurebird the sun is a 'gas planet' and it's rotating pretty slow. or do we measure it relative to radius or mass or?

but lets think. if you form by being a rotating gas cloud that CONTRACTS then angular momentum says you speed up.

if you r a rocky planet and grow from agglomeration of random planetesimals... maybe you don't have that mechanism of speedup.