twisting through the universe without direction or form. About 4.6 billion years ago, this gigantic cloud was transformed into our Sun. The processes that followed gave rise to the solar system, ...

Many stars in our galaxy exist in pairs. Now scientists are finding clues that our Sun may once have had a companion of its own. The question is, where did it go?

But when our Sun first formed 4.6 billion years ago, however, it may have been a different matter. Stars form when giant clouds of dust and gas tens of light-years across cool and clump together.

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 ...

Ancient stars located surprisingly near to our sun formed less than a billion years after the Big Bang — suggesting part of the Milky Way is much older than previously thought, a study has found.