When the AMSAT-OSCAR 7 (AO-7) amateur radio satellite was launched in 1974, its expected lifespan was about five years. The plucky little satellite made it to 1981 when a battery failure caused it ...
China's new barges can transport military equipment across treacherous landing sites. This asset would be critical in a ...
Swarms of satellites launched by SpaceX and other companies are disrupting astronomical observations. Here's how scientists ...
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