Vanguard 1, Oldest Manmade Satellite, Turns 60 This Weekend

Conception of Vanguard 1, which remains in Medium Earth Orbit (MEO) after a record-setting 60 years. Image Credit: National Space Science Data Center

These days, artificial satellites are built with longevity in mind. The latest NASA/NOAA Geostationary Operational Environmental Satellite (GOES-S)—launched earlier this month—is expected to remain in active service for up to […]

Countering the Threat Posed by Orbital Debris

In this computer simulation, the sheer amount of orbital debris becomes apparent—as does the need to find a way to prevent it. Image Credit: NASA

There’s a lot of junk up there. Around 20,000 bits and pieces of satellites and old rocket parts, bigger than 5 cm (2 inches) across, are floating around […]