A defunct Chinese space station, Tiangong-1, is expected to fall to Earth any day now—on March 31, give or take a few days. When it does, it will be the largest manmade object to re-enter Earth’s atmosphere in a decade.
As the day draws near, Vishnu Reddy, University of Arizona assistant professor of planetary sciences, and Tanner Campbell, an aerospace and mechanical engineering graduate student, are tracking its re-entry using a $1,500 optical sensor they built in four months.
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Filed Under: Aerospace + defense