Another dazzling display of northern lights could be visible tonight with the prediction of a minor geomagnetic storm, ...

A planetary parade of six planets is visible in the morning sky through August 20, with Mercury joining Venus, Jupiter, Saturn, Uranus, and Neptune. August 18 to 19 offers the best viewing, when the ...

National security officials have said the Kremlin is seeking to develop a space-based weapon that could knock out American ...

Space is part of the great power competition between the U.S. and China, with both countries racing for dominance.

A first-of-its-kind satellite recently launched into orbit to monitor Earth’s changing surfaces, detecting movement of the ...

The U.S. wants to build a nuclear reactor on the Moon by 2030, but the first challenge is finding an ideal spot.