Comet 3I/ATLAS is a rare visitor passing briefly through our solar system. Here’s how to find it in the night sky—and what ...

A pair of nascent planets have been caught smashing together around the nearby star Fomalhaut, and in doing so have solved the puzzle of its famous ‘planet’ ...

This interstellar vagabond is only the third large interstellar visitor that we have ever discovered — an asteroid or comet ...

Comet 3I/ATLAS will get closest to Earth on Dec. 19, and astronomers will be watching.

The interstellar comet 3I/ATLAS has started to brighten and dim in a remarkably steady rhythm, repeating every 16.16 hours as it sweeps through the inner solar system. That optical heartbeat has drawn ...

Interstellar comet 3I/ATLAS reveals astonishingly rich organic chemistry, confirming that life's building blocks are ...

Kuiper is an outer region of the Solar System that extends from the orbit of the planet Neptune, called Edgeworth , about 30 astronomical units from the Sun, up to 50 astronomical units from the Sun; ...

Tryptophan, the essential amino acid behind the Thanksgiving myth that eating turkey can make you sleepy, has been found to exist on Bennu, a small asteroid that swings by our planet about every six ...

Far beyond Neptune, at the outer rim of our Solar System, astronomers have spotted what resembles a hidden “structure” or “band” of small worlds. The Kuiper Belt is a vast ring of icy bodies beyond ...

Astronomers have just logged the 40,000th near-Earth asteroid, a major marker in humanity’s effort to keep track of the rocks that pass close to our planet. These objects range from a few yards across ...