(via MinutePhysics) This video is about the physics of geosynchronous and geostationary orbits, why they exist, when they don't, when they're useful for communication/satellite TV, etc.

Artistic impression of European Data Relay Satellite (EDRS) system (not to scale). These satellites work in GEO and relay data to and from non-GEO satellites, spacecraft, and stations that aren’t ...

Old, digitized astronomical images taken before the human spacefaring age offer a unique view of the sky devoid of known artificial satellites. In this paper, we have carried out the first optical ...

We show the candidate in SuperCosmos scans of POSS-I red (left) and POSS-II red (right) images. Transients are marked with green circles. The candidate with a measured coordinate is marked with a ...

We are happy to announce that out colleague Jalal Matar successfully defended today his PhD thesis entitled“Synthetic Aperture Radar in Medium and Geosynchronous Earth Orbits: System Concepts and ...