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The robotic Griffin lunar lander has passed a host of critical tests ahead of its first-ever moon mission, which is scheduled to launch later this year.

Black holes more massive than entire galaxies are not a major component of dark matter, the mysterious stuff that's thought to make up most of the matter in the cosmos, a new study finds.

Rocket Lab launched a trio of private signals-intelligence satellites to orbit today (Oct. 21), the 19th mission of the year for the California-based company.

Space is a critical infrastructure layer, underpinning nearly all systems that enable modern life as we know it. It’s therefore critical to maintain a safe and clean orbital environment.

This was not exactly what engineers had in mind when they performed Space Rider's drop test.

On Oct. 22, 1992, the space shuttle Columbia launched into space with the ashes of Gene Roddenberry, the creator of "Star Trek." Here's why it mattered.

Ukraine's military just signed a letter of intent with Nokia and the Finnish satellite maker ICEYE to look into developing a sovereign satellite-communication system for the war-torn nation.

The "eclipse of the century" will plunge some of ancient Egypt's most spectacular sites into darkness on Aug. 2, 2027. These temples, tombs and monuments are inside the path of totality.

Researchers think they might have pinpointed the exact night sky that we see depicted in Vincent van Gogh's iconic painting "The Starry Night."

Victor Glover recalls how a suspected cabin leak warning came just 15 minutes before a crucial engine burn — and why receiving it just five minutes later could have changed everything.