The moon and sun share top billing in 2026. Kicking off the year’s cosmic wonders is the moon, drawing the first astronauts to visit in more than 50 years as well as a caravan of robotic lunar landers ...

It is not often that a comet defies one of the most fundamental visual cues in astronomy-but 3I/ATLAS has done exactly that.

When astronomers first cataloged some of the closest orbiting rocky exoplanets, they wrote them off as bare, airless cinders, ...

Here's how the astronomical phenomenon influences our planet—from the length of our seasons to the way Earth moves through ...