How Big Is The Solar System?
The solar system''s size is vast, extending far beyond the orbit of Neptune to the edge of the Oort cloud, making its estimated diameter about 2 light-years or 125,000 astronomical units (AU).
Solar System
OverviewDefinitionFormation and evolutionGeneral characteristicsSunInner Solar SystemOuter Solar SystemTrans-Neptunian region
The Solar System is the gravitationally bound system of the Sun and the masses that orbit it, most prominently its eight planets, of which Earth is one. The system formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, creating the Sun and a protoplanetary disc from which the orbiting bodies assembled. Inside the Sun''s core hydrogen is fused into helium for billions of years, releasing energy which i
1.2.3 How Big is our Solar System? – Earth & Space
In other words, we can find sizes and distances in our solar system model simply by dividing real sizes and distances by 10 billion. Let''s do this to find Earth''s size on
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