The month of October is hosting multiple celestial events and one of them is a double-comet spectacle. Here's how to see the ...

Short-period comets get close to the sun much more often than their long-period kin, and every time they do, they deplete ...

Interstellar invader Comet 3I/ATLAS is still full of surprises — an unexpected brightening has scientists baffled ...

This is only the third interstellar comet scientists have observed. Its extreme brightening, unusual composition, and intense ...

"The implication of alien technology would be huge and therefore we must take it seriously,” Harvard's Avi Loeb told Newsweek ...

Interstellar comet 3I/ATLAS, discovered in July 2025, offers a rare glimpse into material from beyond our solar system. This ...

The comet could be older than our solar system. The comet is also distinct because nickel vapor was detected in the gas ...

Beginning Monday afternoon, comet Lemmon will pass about 56 million miles from Earth, while comet Swan will soar even closer, ...

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

Astronomer Gianluca Masi and his Virtual Telescope Project will host a special livestream on Oct. 20 beginning at 1:30 p.m.