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12 answers

imagine a disk of dust pulling together.

the centre of the disk is the centre of gravity, everything next to it, is pulled around it. so at all sides dust is being pulled into circles, clockwise and anticlockwise. these two are however not equal, the difference results in everything moving in one direction.

once moving in one direction, the dust will continue to collapse into planets and the sun, which then also still turn in that same direction.

2007-04-15 07:14:10 · answer #1 · answered by mrzwink 7 · 0 3

The most commonly accepted theory is that the planets were condensed out of the "extra" gas left over after the sun was formed. This cloud of gas rotated around the sun in the same direction as the planets. For more information look up Nebular Theory.

2007-04-15 07:17:10 · answer #2 · answered by Jess 2 · 1 0

First of all, we only have eight now, Pluto was demoted a few months ago. The theory is that the Solar System was swirling in a certain direction when all the dust clumped together to form planets, so they just kept going. Now, what's interesting is that Venus ( I think) may be going around the Sun the same direction as everybody else, but why is it spinning in the opposite direction, as in the sun sets in the east? Maybe it was whacked by something, but I don't know how it wasn't just smashed to pieces instead...

2007-04-15 07:16:15 · answer #3 · answered by saralizzy1981 3 · 0 1

They're all orbiting in the same direction because they started out at a disk of spinning debris, as time went on, the heavier particles went to the middle and gave the sun enough mass to begin fusion. The planets followed a similar pattern of the particles clumping together until they were distinct objects in space. They remained moving because of the law of conservation of angular momentum.

2007-04-15 07:26:02 · answer #4 · answered by Chris 3 · 0 0

Stars originate as clouds of gas and dust that gradually condense under gravitational attraction. These clouds have a small amount of net rotation due to their motion through the galaxy, and as they condense they flatten and rotate faster. The flattening is due to centrifugal force and the increased rotation is due to the conversation of angular momentum (like a skater spinning faster when she pulls in her arms).

So the flat protoplanetary disk is rotating, and the planets that condense out of it will thus follow that motion.

2007-04-15 07:17:52 · answer #5 · answered by Astronomer1980 3 · 1 0

First off there is only 8 planets. . .pluto got fired. Planets oribit the sun in the same direction because of the gravitational pull on them.

2007-04-15 07:16:09 · answer #6 · answered by eeyorelvr77 1 · 0 1

Because we are sort of like moons to the sun we go counter-clockwise. and some scientists think pluto isnt a planet so 8 but i think pluto should be a planet

2007-04-15 07:13:07 · answer #7 · answered by <3 2 · 0 3

well I guess you could say that there are nine since Pluto is gone you could add Sedna all rotate with the Sun

2007-04-18 15:15:57 · answer #8 · answered by Anonymous · 0 0

Venus rotates in the opposite direction and Uranus rotates almost on it's side.

2007-04-15 07:47:52 · answer #9 · answered by rosie recipe 7 · 1 1

Because of the sun's rotation.

2007-04-15 07:11:25 · answer #10 · answered by Always Right 7 · 0 0

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