The mission, far beyond its design lifetime, may fall into the atmosphere in a few months.
A solar-sailing mission is now marking three years of spaceflight, but is unlikely to celebrate a fourth anniversary.
The Planetary Society’s LightSail 2 is a crowdfunded solar sail that launched June 25, 2019. It was expected to last a year in an assessment of how well a spacecraft could perform using only the power of the sun.
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