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 ...

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 ...

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 ...

(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.

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 ...

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).

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 ...

Electrostatic control utilises charge manipulation to influence the dynamics of spacecraft without relying on traditional propellant-based systems. This approach enables precise manoeuvring and ...

Two satellites docked together high above Earth on Tuesday, successfully extending the life of one that was running out of fuel. By Kenneth Chang For the first time, one commercial satellite has ...