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(Phys Org2)   The strange tilt of Uranus might be due to having been mooned. Which is fine, as long as someone likes it   (phys.org) divider line
    More: Spiffy, Solar System, small team of researchers, Planet, Saturn, odd tilt of Uranus, new effort, Moon, Jupiter  
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383 clicks; posted to STEM » on 07 Oct 2022 at 6:19 PM (8 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



13 Comments     (+0 »)
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2022-10-07 3:46:29 PM  
Ass
 
2022-10-07 4:03:10 PM  
"strange" tilt?
 
2022-10-07 6:19:59 PM  

Uranus: "strange" tilt?


Here's a username that checks out, checks back in, hires hotel staff to meet John Wick in the bar for a drink, and gets them to watch his dog. w00t

That being said, a collision is essentially the only thing that adequately explains Uranus' axis and spin; everyone knows that Venus spins clockwise just because it's being b*tchy. The angular momentum of all other planets, moons, etc orbiting the sun are arranged in the counterclockwise direction (like most everything else in the known universe), imparted by the sun itself as they coalesced and were detached from the central primordial solar gravity well. Also, if Uranus were an extrasolar captured body then it wouldn't be so much like Saturn and Neptune.
 
2022-10-07 7:48:55 PM  
But is the perenium ok?
 
2022-10-07 8:06:54 PM  
How does the gravitational interaction between a satellite and its parent body rotate the group angular momentum by 90 degrees?  Shouldn't the same forces that cause tidal locking pull a satellite towards an orbit in the equatorial plane?  Shouldn't the mass differential eject a small moon long before it could flip the planet?

I know it's a pop science article, but some kind of effort to explain the momentum transfer and how it causes the observed effect would have been, you know, the bare minimum.
 
2022-10-07 8:08:47 PM  
magnificentbastard.comView Full Size
 
2022-10-07 8:39:16 PM  
Remarkable!
 
2022-10-07 9:35:49 PM  
Saw two of its moons recently--Umbriel and Titania, I think.

Got to show Neptune's moon Triton to a group of onlookers at a recent outreach event. I love that "no way!" reaction from people looking through the eyepiece. (Of course, Saturn does it best.)
 
2022-10-07 10:07:29 PM  
Anything looks like Uranus if you squint hard enough.
 
2022-10-07 10:30:08 PM  
How deep was the penitration of the moon? And did it leave a frothy ring?
 
2022-10-07 11:03:00 PM  

Unsung_Hero: How does the gravitational interaction between a satellite and its parent body rotate the group angular momentum by 90 degrees?  Shouldn't the same forces that cause tidal locking pull a satellite towards an orbit in the equatorial plane?  Shouldn't the mass differential eject a small moon long before it could flip the planet?

I know it's a pop science article, but some kind of effort to explain the momentum transfer and how it causes the observed effect would have been, you know, the bare minimum.


Explained it pretty well in TFA to Me  I don't need to know the physics involved except to trust the results of those that do
 
2022-10-08 12:20:00 AM  
Maybe it has a strange tilt because it helps with gas expulsion. I run into that same problem myself sometimes.
 
2022-10-08 6:32:53 PM  

kkinnison: Unsung_Hero: How does the gravitational interaction between a satellite and its parent body rotate the group angular momentum by 90 degrees?  Shouldn't the same forces that cause tidal locking pull a satellite towards an orbit in the equatorial plane?  Shouldn't the mass differential eject a small moon long before it could flip the planet?

I know it's a pop science article, but some kind of effort to explain the momentum transfer and how it causes the observed effect would have been, you know, the bare minimum.

Explained it pretty well in TFA to Me  I don't need to know the physics involved except to trust the results of those that do


Maybe some people need it explained with a different spin.
 
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