The interstellar comet 3I/ATLAS is barreling toward its closest point to the sun as perihelion looms on Oct. 29. How different will it look when it reappears on the other side?

Scientists have been searching for radio signals from hypothetical alien civilizations using radio telescopes for decades.

In the season of the festival of lights, two rare comets are illuminating the skies over India (and the rest of the world).

Lemmon, which is a rare green comet, can be seen with the naked eye on Oct. 21, according to the Royal Astronomical Society, ...

Over the past seven decades, thousands of sophisticated spacecraft have been launched on ambitious missions to look down on ...

This October offers sky-watchers something special: two comets brightening at nearly the same time as one of the year’s ...

Three billion years ago, a sun -like star reached the end of its life, throwing off its outer layers following its red giant ...

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

Material around Chiron, a small icy world in the far reaches of the solar system, may be taking shape into a ring system of ...

Astronomers found an ancient planetary system being consumed by white dwarf LSPM J0207+3331, hosting the oldest, most ...

Recent sightings of interstellar comet 3I/ATLAS have sparked discussions of Jewish hopes and fears about extraterrestrial ...