How the solar system was created

The nebular hypothesis says that the Solar System formed from the of a fragment of a giant , most likely at the edge of a . The cloud was about 20 (pc), or approximately 65 (ly) across, while the fragments were roughly 1 pc (~3.26 ly) across. The further collapse of the fragments led to the formation of dense cores 0.01–.
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How big is a solar system

The Solar System consists of the Sun and the objects that it. The name comes from Sōl, the Latin name for the . It when a dense region of a collapsed, creating the Sun and a from which the orbiting bodies assembled. The of hydrogen into helium inside the Sun's releases energy, which is primarily emitted through its outer . This creates a decreasing temperature a.
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The solar system and its planets

Astronomers sometimes divide the Solar System structure into separate regions. The includes Mercury, Venus, Earth, Mars, and the bodies in the . The includes Jupiter, Saturn, Uranus, Neptune, and the bodies in the . Since the discovery of the Kuiper belt, the outermost parts of the Solar System are considered a distinct region consisting of .
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