New findings about interstellar comet 3I/ATLAS reveal its surprising size, possible thick disk origin, and what makes it unlike any other ISO ...

How does a 15-kilometer-wide comet, moving at 152,000 miles per hour, slip into our solar system undetected until a global ...

A comet is hurtling into our solar system from interstellar space at about 152,000 miles per hour. The comet, named 3I/ATLAS, was discovered by the ...

The ZTF camera, installed on the 48-inch Schmidt telescope at Palomar Observatory, scans the entire northern sky daily in three optical bands, reaching a depth of 20.5 magnitude—one million ...

Rare, green comet to pass by Earth for the first time in 50,000 years Comet C/2022 E3 (ZTF) will make its closest pass of Earth between Feb. 1 and Feb. 2.