Almost all satellites have some kind of thrusters aboard, but they tend to use them as little as possible to conserve chemical fuel. Reaction wheels are one way to make orientation adjustments without ...
WASHINGTON — A reaction wheel on NASA’s Kepler spacecraft continues to experience elevated levels of friction after a brief rest period, but project officials say that does not necessarily imply an ...
Over the past few decades, numerous space probes sent to the far-flung reaches of the Solar System have fallen silent. These failures weren’t due to communications problems, probes flying into ...
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