The U.S. Space Force tested a new propulsion system designed for satellites that will keep tabs on spacecraft and other objects near the moon.
A new study has found that the 28 most populous cities in the United States — including New York, Chicago, Dallas and Denver — are sinking at rates between two and 10 millimeters (0.08 and 0.4 inches) per year.
A dramatic aircraft chase of a falling spacecraft has provided new insights into the fiery processes that accompany the atmospheric demise of retired satellites.
Long-forgotten mine fields in Cambodia are being revealed in decades-old, recently declassified images from U.S. military satellites.
South Korea sent its fourth homegrown spy satellite to orbit this week in an effort to bolster its ability to keep tabs on its neighbor and adversary North Korea.
The U.S. Space Force now has an official "Space Warfighting" doctrine outlining how the service can train and prepare units for a war fought in space.
Two commercial satellites have completed an undocking maneuver high above Earth, signaling the successful end to a pioneering spacecraft life-extension mission.
Germany's armed forces are planning to build their own constellation of satellites, to avoid becoming reliant on SpaceX's Starlink or other orbiting communications networks.
At least three old satellites or rocket bodies fall to Earth every day, a new report reveals. Some experts think it's a worrying trend.
Astroscale and Orbit Fab are teaming up to refuel U.S. Space Force satellites in geostationary orbit high above Earth, demonstrating a capability that could reshape space operations.