About 4.5 million years ago, a great cosmic dog kicked past our Solar System – and its effects may still be seen today.

Comets and asteroids preserve the building blocks of our solar system and should help explain its origin. But there are unsolved puzzles. For example, how did icy comets obtain particles that formed ...

Nearly 4.5 million years ago, two enormous, blazing stars swung close to the solar system. They did not touch the sun, but ...

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A simulation showing how electrical currents behaved in the protoplanetary disc around the sun, potentially forming chondrules. The brighter crescent is an area where the computer rendered the ...

Samples collected from the asteroid Bennu are continuing the shed light on the origins of the solar system and how life ...

Over short time scales, the solar system is a beautifully predictable dance, with each planet behaving in a ways that astronomers can calculate — but over long enough periods, it's not such an orderly ...

THE WOODLANDS, Texas — Thanks to the Apollo missions, scientists have their hands on hundreds of pounds of lunar rock right here on Earth. But because of a twist of fate, it isn't quite enough to ...

How did icy comets obtain particles that formed at high temperatures, and how did the particles acquire rims with different compositions? Scientists have now modeled the trajectories of refractory ...

Washington, D.C.— Comets and asteroids preserve the building blocks of our Solar System and should help explain its origin. But there are unsolved puzzles. For example, how did icy comets obtain ...