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

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

Analysis of an ancient meteorite suggests that rocky planets both near and distant from the sun may have formed at the same time, challenging current models of our solar system’s evolution.

– 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, , is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.

– 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.