The solar system's oddball planet has some pretty odd moons, too. The first infrared spectra of Uranus's small inner moons, ...

Mercury, typically classified as the Solar System’s innermost planet, is displaying features more commonly associated with comets. On 3, Steven Bellavia captured an image from Surry, Virginia, ...

Far beyond the bright planets, in the dim outskirts of the Solar System, astronomers keep stumbling on objects that refuse to ...

Of the seven Earth-sized worlds orbiting the red dwarf star TRAPPIST-1, one planet in particular has attracted the attention ...

New high-contrast images from SPHERE show a stunning variety of debris disks shaped by collisions of tiny planet-building ...

Ask someone on Earth for the time and they can give you an exact answer, thanks to our planet's intricate timekeeping system, ...

Still, science being science, we needed proof—and we got it in 1992, when two astronomers found two planets orbiting a pulsar ...

3I/ATLAS is only the third known interstellar visitor, hence the prefix “3I.” The second known interstellar body, Comet ...

While Mercury is the innermost planet in the Solar System, on average it spends more time closer to Earth than Venus does.

YouTuber "The 5439 Workshop" has built a solar system coffee table with a miniature, mechanically-exploding star system.

Far beyond Neptune, at the far outer rim of our Solar System, astronomers have spotted what looks like a hidden “structure” ...

Astronomers measure the speed at which the solar system is hurtling through space by mapping surrounding galaxies and ...