Then there was the September discovery of C/2025 R2 (SWAN), a comet so bright that even when it was near the moon on ...

Comet C/2025 R2 (SWAN) was imaged in October as it crossed the galactic plane of the Milky Way.

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

Before 3I/ATLAS, the only other confirmed interstellar tourists we've seen were the now-famous, cigar-shaped 'Oumuamua' in ...

Interstellar comet 3I/ATLAS is approaching Earth on December 19 but NASA has clarified that it does not pose any threat to ...

Comet 3I/ATLAS nears Earth on December 19, 2025. This interstellar visitor displays an unusual green glow. Scientists are ...

Scientists in Boulder are using existing NASA spacecraft to track a rare interstellar comet called 31/ATLAS as it travels through Earth’s solar system. Comet 3I/ATLAS was first observed on July 1 and ...

The emission of X-rays is usually the domain of the energetic events of the universe: hot stars, supermassive black holes, ...

Anaheim Electronics built two Sinanju Stein units, but their fates diverged wildly. One became Full Frontal's legendary ...

NASA reveals the true, bizarre reason for the 3I/ATLAS comet's 16.16-hour pulse. Scientists link the interstellar object's ...

Christmas Day in 1809 saw a surgical first thanks to Dr Ephraim McDowell, the American physician who performed the world’s ...

A simple breakdown of the new 3I/ATLAS pulsing discovery and why scientists are checking if Callisto might be affected.