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BigCatDaddy
10-13-2011, 07:39 AM
http://dvice.com/archives/2011/10/we-now-know-why.php

Uranus isn't just gassy, it's also tilted completely sideways, such that instead of rotating like a spinning top, it rolls around the plane of the solar system more like a giant ball. Now astronomers think they know how this happened, and it means that Uranus has been pounded really, really hard not once, but twice.

Uranus' axial tilt of 98 degrees means that it's got one pole pointed almost directly at the sun, and one pole pointed out into space. As the planet revolves around the sun, these poles slowly switch places, meaning that if you lived there, you'd get 42 years of sunlight followed by 42 years of darkness, with a short time in between where things would seem almost normal.

Needless to say, this sort of behavior is a bit strange for Uranus, although nobody's quite been able to determine how it happened. New simulations from astronomers at the Observatory of Côte d'Azur in Nice, France may have just figured it out, and the answer seems to be that Uranus has suffered from not one but two giant impacts.

The only reliable way to change the tilt of one planet is to smash it with another planet of comparable size. While planets running into other planets isn't something that happens very often nowadays, back in the tempestuous youth of the solar system, it was relatively common: a planet the size of Mars hitting Earth four and a half billion years ago probably blasted off enough stuff to form the moon, for example. But with Uranus, one collision big enough to knock the entire planet sideways would also have screwed up Uranus' system of moons, which isn't the case.

Replacing that one big impact with two slightly smaller impacts, though, works out perfectly. Each impact would have involved a planet the size of the Earth punching into Uranus several billion years ago, early enough that Uranus' moons could still have made it into their current orbits. Interestingly, an impact of about the same size is also thought to have happened to Neptune, which is making astronomers wonder whether the model they have for the formation of the outer planets is quite right. It's always been assumed that way out around Uranus and Neptune, things were pretty chill, with the gas giants slowly forming by sweeping up gas and dust in their orbits. But if these latest impact simulations are correct, it implies that the outer solar system was a much more violent place than we ever thought.

lcarus
10-13-2011, 07:41 AM
Heh

Dave Lane
10-13-2011, 07:56 AM
Cool deal

KILLER_CLOWN
10-13-2011, 07:59 AM
www.thunderbolts.info

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Gonzo
10-13-2011, 08:39 AM
I'd think Uranus would break apart after getting hit so hard. It just shows how tough Uranus really is.
Posted via Mobile Device

tooge
10-13-2011, 08:54 AM
Uranus got pounded so much it became gassy?

BigCatDaddy
10-13-2011, 08:58 AM
Uranus got pounded so much it became gassy?

And the sumbitch got turned sideways.

Gonzo
10-13-2011, 09:08 AM
Uranus got pounded so much it became gassy?

Doesn't Uranus always get gassy after it get's pounded?

talastan
10-13-2011, 09:13 AM
I thought this was another Claythan thread. I was getting ready to warn people......;)

tooge
10-13-2011, 09:14 AM
Doesn't Uranus always get gassy after it get's pounded?

If you pound chili uranus gets gassy, that I know.

Detoxing
10-13-2011, 10:12 AM
Uranus was fun say in 1st grade. Still fun to this day.

Radar Chief
10-13-2011, 10:18 AM
Uranus was fun say in 1st grade. Still fun to this day.

Q: What does toilet paper have in common with the star ship Enterprise?
A: They both circle Uranus searching for Klingons.





That’s all I got.

loochy
10-13-2011, 10:25 AM
Q: What does toilet paper have in common with the star ship Enterprise?
A: They both circle Uranus searching for Klingons.





That’s all I got.

STUPID! Klingons aren't anywhere near Uranus! Their homeworld, Qo'noS, was first visited by Humans in 2151. It is about four days away from Sol at warp 4.5.

bevischief
10-13-2011, 12:49 PM
Doesn't Uranus always get gassy after it get's pounded?

ROFL

Detoxing
10-13-2011, 12:52 PM
STUPID! Klingons aren't anywhere near Uranus! Their homeworld, Qo'noS, was first visited by Humans in 2151. It is about four days away from Sol at warp 4.5.

Fucking noobs don't know anything...

Sofa King
10-13-2011, 12:53 PM
STUPID! Klingons aren't anywhere near Uranus! Their homeworld, Qo'noS, was first visited by Humans in 2151. It is about four days away from Sol at warp 4.5.

http://farm2.static.flickr.com/1327/553425578_5799d17d8a.jpg

Dave Lane
10-13-2011, 02:19 PM
www.thunderbolts.info



Ok I tried to slog through this and went to the site. What exactly are they proposing? There are gods throwing lightening bolts around or what. It's like they skirted the issue 40 times and I gave up trying to get their point.

Dave Lane
10-13-2011, 02:25 PM
Doesn't Uranus always get gassy after it get's pounded?

Well it is one of the "Gas Giants"

loochy
10-13-2011, 02:31 PM
Well it is one of the "Gas Giants"

Like Shell or Conoco?

Gonzo
10-13-2011, 02:47 PM
Like Shell or Conoco?

Uranus reminds me of the BP ordeal.

There's a huge hole that was caused by a bunch of guys drilling in it, they went too deep and a bunch of black sludge came out. Then, it took hundreds of man-hours to finally plug it back up, (but not before it killed thousands of animals).

loochy
10-13-2011, 02:48 PM
Uranus reminds me of the BP ordeal.

There's a huge hole that was caused by a bunch of guys drilling in it, they went too deep and a bunch of black sludge came out. Then, it took hundreds of man-hours to finally plug it back up, (but not before it killed thousands of animals).

ROFLLMAO

whoman69
10-13-2011, 02:58 PM
STUPID! Klingons aren't anywhere near Uranus! Their homeworld, Qo'noS, was first visited by Humans in 2151. It is about four days away from Sol at warp 4.5.

Which makes it stupid in itself because at warp 4.5 it would take 20 days to reach the nearest star system from Earth. This places the Klingon homeworld less than one light year from Earth and coming about 60 years too soon.

Stupid Enterprise writers.