After a year devoid of comets visible to the naked eye, two of the celestial entities — C/2025 A4 (Lemmon) and C/2025 R2 ...

The comet-like object Chiron has been caught in the process of forming new rings, which could help us understand how these ...

Two comets, C/2025 A4 (Lemmon) and C/2025 R2 (SWAN), are about to reach their closest approach to Earth and you can watch the ...

Comet C/2025 A6 (Lemmon) is this year’s brightest comet visible from Earth—an icy relic from the solar system’s origins that ...

Comets Lemmon and SWAN will be at their brightest just as the annual Orionid meteor shower produced by Halley's Comet reaches ...

Chicago-area residents could be treated to a wonderful nighttime display as Comet Lemmon makes its closest approach to Earth in coming days.

Comet Lemmon, also designated C/2025 A6, was discovered in January by a telescope scouring the night sky for near-Earth ...

A newly discovered odd radio circle in space could serve as a time capsule for the violent events that shape galaxies.

Astronomers are stunned by interstellar comet 3I/ATLAS releasing water vapour unusually far from the Sun. This rare event, ...

Anyone who studies planetary formation would relish the opportunity to get a close-up look at an interstellar object. Sending ...

The interstellar comet 3I/ATLAS may be out of view of Earth, but orbiters on Mars were able to recently get a look at it.