The conventional explanation for the moon's formation is that an enormous rock smashed into the nascent Earth and created it as a result. A new theory challenges the particulars of how events may have ...

Just 4.3 light years from Earth lies a star called Alpha Centauri A, which is famous for being the nearest star that resembles our own Sun. In the popular Avatar movies, this star's system is home to ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Illustration of a stage in the formation of the Earth-moon system. The Earth had recently formed ...