The latest news on satellites
How the Pentagon can cut its reliance on commercial satellites.
U.S. drones and North Korea's satellite launch show the need for increased public discourse as the tools of modern warfare expand.
More than 19,000 man-made pieces of debris endanger orbiting satellites.
Latest satellite carries four new instruments capable of making precise observations.
Europe now on its own for spacecraft to study black holes, gravitational waves.
SeaWiFS satellite that collected ocean data fails after 13 years in orbit.
New studies show how satellite images can predict the spread of human illness.
Hubble telescope spies what may be most distant object ever observed.
Satellite data put hard numbers on key player in climate.