Short-period comets get close to the sun much more often than their long-period kin, and every time they do, they deplete more of their gas and dust. Consequently, they don’t typically emit as much ...

The third object coming from outside our solar system that is observed made its closest approach to the Sun this week. In ...

Comet 3I/ATLAS, a 7-billion-year-old visitor from another star system, is stirring alien rumors. Scientists explain why the ...

What: Comet 3I/ATLAS reached perihelion on October 30, 2025. This special SETI Live explored what scientists have learned about its origin, chemistry, and trajectory ...

Scientists who study comets are struggling to keep up with popular speculation that the interstellar object 3I/ATLAS was sent ...

Comet 3I/ATLAS, which made a close approach to the sun, has prompted lots of public interest. Kim Kardashian asked NASA's ...

Is 3I/Atlas an alien spacecraft or just a really interesting rock hurling through the cosmos? That debate has been raging ...

Three meteor showers are active over Michigan skies, with peaks approaching. And a pair of comets are joining the show.

Two comets, Lemmon and SWAN, are visible in the night sky through October 2025. Comet Lemmon will appear green and is best viewed in the northwest sky after sunset. Comet SWAN is dimmer and best ...