Defunct spacecraft litter the solar system from decades of expired missions. Some of them are landers and impactors that studied the surface of our astronomical neighbors and eventually lost contact with Earth. Others are orbiters sent to various bodies t
Credit: Amanda Montaez
On a dark stretch of the chilly Comet 67P/Churyumov–Gerasimenko the lander Philae has begun a lonely and silent vigil.
From Scientific American
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