Steve Gayner
Wonder of ScienceRelative rotation periods of planets in 2D.
Credit: @Physicsj
Philipp Suessmann
Enby Shark@wonderofscience @Physicsj of course Uranus has to be different
@wonderofscience @Physicsj there's a joker in every bunch. Looking at U
KristinMuH@wonderofscience love Uranus just doing its own thing. Shine on you crazy diamond!
Simon Brooke@wonderofscience @Physicsj I hadn't realised the rotation periods of the Earth and Mars were so uncannily similar. Is there an underlying cause for this, or is it happenstance? I'd be less surprised if Earth and Venus had similar rotation periods, since they have similar mass!
Yora@simon_brooke @wonderofscience @Physicsj There are so many different random factors in even just one star system that you'll inevitability end up with a number of strange looking coincidences.
Though the biggest one is the Sun having 400 times the diameter of the moon and also being 400 times as far from Earth, making them look nearly identical in size.
Annular eclipses should be extremely rare in a galaxy, but we just happen to get one.
Geo@simon_brooke @wonderofscience @Physicsj I'm no expert, but it is not just mass. Closeness to the sun (close planets rotate slower) and possibly the existence of moons play a role. I also looked it up and apparently, no one knows exactly why Venus rotates so slowly (also compared to Mercury) and in the 'wrong' direction (the only one besides Uranus to rotate to the left instead of the right in the picture above).
Thank you, I learnt something new today.
Thank you, I learnt something new today.
Cris
Stargeezer Smith
J. Randall Todd@wonderofscience @Physicsj bassackwards Uranus, never change
Lucas
John Mastodon@wonderofscience @Physicsj uranus looks weird!
eyebrowsgerri will not comply@wonderofscience @Physicsj Anyone else feel a little queasy watching this gif?
Rai Aren 🖖✨📚🇺🇦
Tyler 👋@wonderofscience @Physicsj Oooh!! Is there a version that compares periods of revolution around the sun as well? I’d love to see that!!
Locomotoro@wonderofscience @Physicsj Urano es la oveja negra.
lazysupper 🍂🍁 salguod, man@wonderofscience @Physicsj that's a long workday on venus.
BigLinter@wonderofscience @Physicsj imagine doing this with radio buttons*g*
I am who I am.@wonderofscience @Physicsj Pluto, we will never forget you.
Christopher Faille@wonderofscience Fascinating. Mars, presumably humanity's first target outside our home planet's orbit, has a length of day just a little longer than our own. Adaptation won't be too difficult for the settlers.
ThomasIf Neptune would rotate vertikal it would be perfect!
🤔🤓
TillI had to think twice why the rotation time of earth is not exactly 24 hours. And why that doesn't mean, that once a year, midnight is at 12:00 instead of 00:00
Stevens R MillerVery cool. Looks like it uses the celestial day for Earth, but the solar day for Venus (haven't checked the others).
Dana Priesing
Dennis Faucher 
@wonderofscience @Physicsj That's very cool
kattekrab
Michael
PhDog 🇮🇪Jupiter goes all that way in *nine hours*?? Peppy!
woolie@wonderofscience @Physicsj it’s actually amazing how, excluding the tidally locked planets, the planets have huge differences in size, formation, and composition but all have rotation periods within a factor of ~2.
@wonderofscience @Physicsj (I know Mercury isn’t tidally locked, 3:2 resonance with Earth etc, but it’s still close enough to the sun to exclude from the generalization)
Kevin Karhan 
Aviva Gary
CautionWIP 🎃+🇨🇦+🏳️🌈= 
@wonderofscience @Physicsj Please build this as a new game of Frogger.