The satellites that run your weather forecasts, your television, and a significant portion of global communications all occupy a narrow band of space 36,000 kilometers above the equator. They share ...

The world’s leading space powers desperately want to know what the others are up to high above the equator. For more than a decade, the US military has operated a fleet of “inspector” satellites ...

It's been decades since humanity first sent a satellite into orbit, and during all this time we kind of become experts at it. What we still haven't mastered yet is extending the life of these ...

Last year, scientists drove up Mauna Loa volcano on Hawai'i, aimed a laser at a reflector positioned on Haleakala peak on Maui, and beamed rapid pulses of laser light through 150 kilometers of ...

The OEO satellite promises a geosynchronous orbit around the equator, low latency, and a drastic cut in costs—using readily available technology. Thousands of satellites have been deployed during ...

A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours, 56 minutes, and 4 seconds (one sidereal day).

Engineers at the U.S. Naval Research Laboratory's (NRL) Naval Center for Space Technology (NCST) recently completed robotic payload component level testing for the Defense Advanced Research Projects ...

HELSINKI — China appears to have considered boosting its space situational awareness capabilities by placing a satellite in a retrograde orbit out at the geostationary belt. A paper published in ...

Scientists have demonstrated a capability long sought by physicists: transmitting extremely precise time signals through the air between far-flung locations at powers that are compatible with future ...