As the Earth flies through space in its celestial dance around ... moon came from. None of them are perfect, but in general, ...

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles ...

The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young ... between the Earth and the moon is an important clue about the details of the moon-forming impact ...

As Earth moves through its orbit around the Sun, different parts of the ... to make up for the quarter days in Earth's orbit. The time for the Moon to go through a complete cycle (from a full ...