NASA's infrared telescope SPHEREx captured stunning images of interstellar comet 3I/ATLAS as it exited the solar system.

A newly discovered comet has astronomers excited, with the potential to be a spectacular sight in early April. C/2026 A1 (MAPS) was spotted by a team of four amateur astronomers with a remotely ...

Interstellar comets are the original cosmic explorers, and by studying their metallic whispers, we are learning the secrets of worlds we may never see directly.

Astrophotographer Brennan Gilmore captured this photo of Comet Lemmon on October 4, 2025 from central Virginia. No two comets are exactly alike. While SWAN’s orbit is very well aligned with the plane ...

A new comet approaching the sun has caught the attention of astronomers, primarily because of its lineage. It appears to ...

We humans are a curious bunch. Whenever we come across something unfamiliar, our minds naturally start filling in the blanks about what it could be. That’s exactly what’s happening with comet 3I/ATLAS ...

TOLEDO, Ohio — Skywatchers have a rare cosmic visitor to look forward to this month. Comet C/2025 R2 (SWAN), first spotted in September by NASA’s Solar Wind Anisotropies instrument aboard the SOHO ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. You’ve likely already heard about two comets visible from ...

New infrared observations reveal that the rare interstellar visitor known as comet 3I/ATLAS has dramatically brightened ...