Jodcast Forum - Discussion Feed (How did the solar system form with planets rotating the way they do ?) Thu, 09 Sep 2010 14:04:40 +0100 http://forum.jodcast.net/ Lussumo Vanilla 1.1.8 & Feed Publisher How did the solar system form with planets rotating the way they do ? http://forum.jodcast.net/comments.php?DiscussionID=21&Focus=84#Comment_84 http://forum.jodcast.net/comments.php?DiscussionID=21&Focus=84#Comment_84 Tue, 27 Jan 2009 19:08:48 +0000 EarthUnit I have come to 1 of 2 conclusions

1) I am over looking something that is blindly obvious
or
2) no one really knows for sure and just uses words like “magnetohydrodynamics” to confuse me

Anyone got any ideas ? or is a job for Dr. Tim ?


PS Neptune spins quit happily anti clock wise and its Uranus that’s 90 degrees off 
Sorry about that. ]]> How did the solar system form with planets rotating the way they do ? http://forum.jodcast.net/comments.php?DiscussionID=21&Focus=76#Comment_76 http://forum.jodcast.net/comments.php?DiscussionID=21&Focus=76#Comment_76 Thu, 22 Jan 2009 18:23:32 +0000 EarthUnit
Would it be gravitational tide forces from the Sun?
Unless anyone know different, any more ideas comments still welcome

And yes I will try to think before I post next time :-) ]]> How did the solar system form with planets rotating the way they do ? http://forum.jodcast.net/comments.php?DiscussionID=21&Focus=75#Comment_75 http://forum.jodcast.net/comments.php?DiscussionID=21&Focus=75#Comment_75 Thu, 22 Jan 2009 16:37:49 +0000 EarthUnit Listening to the January extra pod cast Dr.Tim O`Brien was talking about how the Earth orbits the Sun, which made me think......... a dangerous thing.

Looking down on the solar system from above the North Pole, planets orbit around the sun anti clock wise, and apart from Venus and Neptune rotate on their axis anti clock wise.

Now with my limited knowledge, the laws of Kepler (or is it Newton) say that the closer you are to the Sun the faster your orbit speed. So as the rocks etc. that collided to form the planet, the bits closer to the sun move faster, and the rocks dust and ice further away from the sun move at a slower speed, which to me should make the planet rotate on its axis in a clock wise direction.

My question is, what law of physics have I forgotten, to make them spin anti clockwise?
Or more likely what have I got completely wrong ?

thanks for any help, Geoff aka EARTHUNIT ]]>