The newly discovered comet, C/2025 F2 (SWAN), is racing toward the Sun, and it may not survive its closest approach.

The Andromeda galaxy is surrounded by a constellation of dwarf galaxies that are arranged in a highly lopsided manner.

You're now well and truly in the Andromeda constellation. Next, take a right-hand turn and travel roughly the same distance one more time to stumble upon a smudge in the sky, the Andromeda Galaxy.

called the Andromeda Nebula (after the constellation in which it was located). It was entry 31 in Charles Messier's 18th century catalog of interesting fuzzy objects, and is thus also called M31 ...

Minor Planet Center officially designated comet SWAN25F as C/2025 F2 (SWAN) on April 8. SWAN is an instrument particularly designed to study the Sun ...

The Andromeda galaxy is surrounded by a constellation of dwarf galaxies that are arranged in a highly lopsided manner. Analysis of cosmological simulations reveals that this degree of asymmetry is ...