CHRISTIAN JEGOU PUBLIPHOTO DIFFUSION / SCIENCE PHOTO LIBRARY CHRISTIAN JEGOU PUBLIPHOTO DIFFUSION / SCIENCE PHOTO LIBRARY
Early solar system. Artist's impression of the solar system during its formation. The newly- formed Sun (white, top) is surrounded by a rotating cloud of gas and dust from the collapsing nebula (red) from which it formed. The planets are at lower right. These formed by accretion of rocky asteroids (planetismals, lower left). The solar system is estimated to be around 4.6 million years old.
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