This is also how the sun and the other planets formed.

It is one chance in billions that the planets will form.

But he added that theorists had no idea how and if such planets would form to begin with.

It is likely that this planet formed even further out.

The Earth and the other planets formed about 4.6 billion years ago.

After all, the sun and the planets formed from the same dust cloud.

His work is a step towards a more thorough understanding of how stars and planets form.

Why do the planets in our solar system form a 'flat' orbit?

Scientists have discovered recently that planets really can form within such systems.

It also seeks to further understand how galaxies, stars and planets form.