Planetary Science

How planets move in orbits?

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October 08, 2010 2:56AM

Planets move in orbits that are called ellipses, which are like

slightly squashed circles. They started moving in this way even

before they were planets. When the Solar System was first forming,

there was just a big disk of gas and dust called the Solar Nebula.

The main part in the middle became the Sun, and eventually the dust

and gas collapsed under gravity to form the planets, in the same

direction the disk was spinning (counterclockwise).

If you want a more scientific answer, the planets are actually

falling around the Sun at a rate that allows them to travel in

these ellipses, which are basically just paths of curved

space-time, according to Einstein.

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