A mysterious comet from beyond our solar system is giving astronomers a rare glimpse into alien worlds — and it may have ...

A newly discovered meteor stream may be the smoking gun of an asteroid slowly disintegrating under the Sun’s intense heat.

An interstellar comet carries water unlike anything in our solar system, revealing a far colder birthplace and clues about planetary systems ...

A rare comet from another star system is revealing just how different alien solar systems may be from our own.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A newly brightening comet is now visible in the predawn sky ...

A brightening comet on a once-in-170,000 years visit to the inner solar system is becoming easier to find before sunrise — and Thursday, April 16, is an ideal time to see it before it gets too close ...

Dark matter is thought to make up most of the matter in the universe, but the only way it interacts with its surroundings is ...

The comet doesn't return for decades, but tonight is one of our two yearly reminders that it's out there!

Comet C/2025 R3 (PanSTARRS) will make its closest approach to Earth on April 26 after surviving a near-Sun encounter that brightened it to naked-eye visibility under dark southern skies. NASA and ...

St. Martins is applying for a DarkSky International accreditation to attract stargazers to the planned dark sky corridor ...

The Eta Aquarid meteor shower soon will light the sky with debris from Halley’s comet. But a bright moon will spoil the fun ...

The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place before our solar system existed.