– Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in our solar system. This happened about 4½ billion years ago.

For centuries, people have wondered where Earth’s vast oceans came from. Our planet didn’t form with much water, yet today it’s covered in it. New research using powerful radio telescopes is bringing ...

Travel through time to witness some of the most remarkable episodes in our solar system's history, uncovering its ancient ...

Brown, Rein and Malhotra think that sometime during the Solar System’s formation, an uninvited guest anywhere between 2 and 50 times the mass of Jupiter barged in fast enough to both shift the ...

– Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in our solar system. This happened about 4½ billion years ago.

This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being.

This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being.