This year, the October sky could offer a rare spectacle: two comets are expected to become visible simultaneously. The first, discovered recently, follows an extremely long orbit. The ...

3I/ATLAS is an interstellar comet that has traveled from outside the solar system, with a diameter of 10 to 20 kilometers.

Newly discovered comet C/2025 R2 (SWAN) will soon be gracing our evening sky. Here's how to see it and what to expect.

By studying the chemical composition of an odd, dying star, astronomers discovered that it had been feasting on what used to ...

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

Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising ...

It could mean two bright comets will be visible in the night sky at the same time, on the peak night of a meteor shower.

Not all Vatican Observatory research is done by Vatican astronomers. This is illustrated by the paper, “A Dormant Captured ...

Not all Vatican Observatory research is done by Vatican astronomers. This is illustrated by the paper, “A Dormant Captured Oort Cloud Comet Awakens: (18916) 2000 OG44”, published this June in the ...

Astronomers have uncovered the chemical fingerprint of a frozen, water-rich planetary fragment being consumed by a white ...

Astronomers have detected the chemical fingerprint of a frozen, water-rich planetary fragment being devoured by a white dwarf ...

University of Warwick astronomers have uncovered the chemical fingerprint of a frozen, water-rich planetary fragment being ...