Two green comets are streaming close to earth. Here’s how skygazers can see this rare occurrence

Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere ...

Comet watch heats up as A6 Lemmon gets brighter. Here’s how to see it

Comet C/2025 A6 Lemmon is getting brighter and whether you have a telescope, binoculars or just your eyes, here’s how you can ...

Interstellar comet 3I/Atlas challenges Earth: its behaviour is “significantly different” from that of all known asteroids

The comet, which continues its journey through the solar system, has been observed by space telescopes near Earth.

Spacecraft on watch as an interstellar traveler approaches Mars

Enter the European Space Agency’s two Mars satellites, which now have their cameras pointed at 3I/ATLAS. The comet also could provide good viewing this week for NASA’s Mars Reconnaissance Orbiter ...