Geosynchronous orbits are vital for communications and Earth-monitoring satellites. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A ...

A small asteroid came within a cosmic hairbreadth of the ring of communications satellites circling the Earth in geosynchronous orbit this week. Passing by our planet at an altitude of about 35,000 km ...

Okay, it's not quite that common an occurrence, but there are indeed a number of firms giving this a go. The latest to join ...

An artist's rendition of DARPA's RSGS robotic payload on board SpaceLogistics' Mission Robotic Vehicle. (Northrop Grumman) SpaceLogistics will work with DARPA to develop a robotic servicing spacecraft ...

The 1st Space Operations Squadron has upgraded the Geosynchronous Space Situational Awareness Program's ground system. (U.S. Air Force) The 1st Space Operations Squadron recently completed a major ...

Early this evening in Florida, space transport company SpaceX successfully launched its Falcon 9 rocket on a trajectory to place a satellite in geosynchronous orbit. The success comes on the third ...

China will have a permanent view of nearly one-third of the Earth’s surface, with the launch of the world’s first geosynchronous orbit synthetic aperture radar (SAR) satellite. The civilian-use Ludi ...

Amateur radio operators like to say that working a contact in space can be done with a simple handheld transceiver and a homemade antenna. And while that’s true, it’s true only for low Earth orbit ...

A Long March 3B lifts off from Xichang, sending Shijian-25 on its way to orbit, Jan. 6, 2025. Credit: Ourspace HELSINKI — China’s experimental Shijian-21 and Shijian-25 satellites have separated in ...

Geosynchronous Synthetic Aperture Radar (GEO SAR) systems represent a promising frontier in Earth observation technology, offering continuous monitoring of specified regions with exceptionally short ...

During the Cold War the U.S. and Soviet Union had a gentlemen's agreement to avoid targeting one another's geostationary satellites, which are crucial for weather forecasts, satellite TV, global ...