and compares it to other stars using the Hertzsprung-Russell diagram. The Sun is identified as a yellow star of spectral type G, and its lifecycle is outlined, from its formation from a gas cloud ...

The Solar System was formed around 4.6 billion years ago from ... to heat and radiation pressure from the fusion reactions. The Sun is expected to be a main sequence star for billions of years.

When the solar system formed, rocks (and other dense, heavy materials in the dust cloud such as iron and uranium) tended to gather closer to the Sun, and these materials combined together to form ...

The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young sun. It grew larger thanks to countless collisions between dust particles, asteroids, and other growing ...