descrbe earth and solar system
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The core accretion model
Approximately 4.6 billion years ago, the solar system was a cloud of dust and gas known as a solar nebula. Gravity collapsed the material in on itself as it began to spin, forming the sun in the center of the nebula. With the rise of the sun, the remaining material began to clump together.
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The solar system is the Sun and all the objects that are bound to the Sun by gravity. The solar system has eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. ... The nebular hypothesis describes how the solar system formed from a giant cloud of gas and dust about 4.6 billion years ago.
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