A satellite that’s been dead for 50 years ended up thousands of miles away from where it should be. Instead of spending the ...

In the first launch, SpaceX sent up a South Korean communication satellite called KoreaSat-6A. The Falcon 9 rocket took off ...

Here is the gravitational constastant, and is the mass of the earth. For a stable circular orbit, the centrifugal force, which is directed outward radially must balance the gravitational force, which ...

Update 12:22 p.m.: SpaceX has just launched the Falcon 9 carrying the Koreasat-6A telecommunications satellite into geosynchronous transfer orbit from KSC. Update 12:13 p.m.: This mission marks the ...

Debris from the broken-apart Intelsat 33e telecom satellite is spreading across geosynchronous orbit, threatening spacecraft ...

SpaceX has a pair of launches on tap Monday from its two launch pads on the Space Coast that could lift off within four hours ...

"Killer electrons" that travel at nearly light speed inside Earth's Van Allen belts—the zone that surrounds the planet and ...

SpaceX knocked out a pair of launches from its two pads on the Space Coast on Monday in just over four hours. First up was a ...

Australia's defence minister said on Tuesday a defence satellite program was scrapped because of the threat of new technology ...

Additionally, there is a pressing need for mobile, rapidly deployable EW systems that can counter increasingly sophisticated ...

Sceye’s high altitude platform system is designed to float in the stratosphere and monitor methane leaks and other events.

SpaceX successfully launched KT SAT's Koreasat-6A communications satellite, enhancing broadcast and navigation services in ...