Astronomers are racing to study 3I/ATLAS, an interstellar comet whose strange behavior reveals new clues about how other ...

Scientists have recently uncovered a fascinating new exoplanet a mere 30 light-years away from our solar system. What sets ...

Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

The moon and Venus will shine vividly alongside a bright star in the early morning in a celestial rendezvous that should be visible across the U.S.

NASA says its Hubble Space Telescope has detected a white dwarf star that consumed fragments of a Pluto-like object. Space ...

Pluto is a bit of a loner. The dwarf planet is no longer considered a regular planet; it does not orbit on the same plane as ...

NASA's Hubble Space Telescope detected material from a Pluto-like body spiraling into a white dwarf star 260 light-years away ...

TRAPPIST-1e shows no signs of its first atmosphere, but hints of a secondary one remain. Liquid water could still be possible ...

To tell a Mars rover to turn left or an orbiter to change focus, mission scientists have to beam powerful transmissions ...

Regulus, a distant star, Venus and our moon will be visible during a conjunction tonight, and how Californians can best see it.

Astronomers predict it will pass relatively close to four planets (but not Earth) and the Sun, then continue its cosmic ...

Since astronomers found the first planets outside our solar system in 1992 and the first planet around a sunlike star in 1995 ...