Our Milky Way could have many more satellite galaxies than we've detected so far. They're just too faint to be seen.

China’s successful orbital satellite refueling operation marks a historic milestone that the US has not achieved.

The event, not so far confirmed by China, was reported after optical sensor data suggested the satellites "appeared visually ...

Earth has rarely looked as remarkable as it does in this stunning shot (above) captured by NASA astronaut Don Pettit from the International Space Station (ISS).

SpaceX launched a mystery satellite to geostationary transfer orbit (GTO) from Florida's Space Coast early Sunday morning ...

The Milky Way could have many more satellite galaxies than scientists have previously been able to predict or observe, ...

The rapid advancement in Earth observation systems and satellite networks driven by commercial space has led to a significant increase in the number of remote sensing satellites, thereby establishing ...

Two Chinese satellites reportedly performed what appears to be the country's first high-altitude orbital refueling, as U.S.