Lightsail 2 is a tiny (4 kg), experimental, crowd-funded satellite with a large (40 sqm) solar sail that was developed by the Planetary Society. The Planetary Society reported that the sail successful used the momentum of the light from ...See moreLightsail 2 is a tiny (4 kg), experimental, crowd-funded satellite with a large (40 sqm) solar sail that was developed by the Planetary Society. The Planetary Society reported that the sail successful used the momentum of the light from the sun to adjust the satellite's orbit around the Earth. Unfortunatly the large sail is also susceptible to atmospheric drag so it's average altitude is falling closer to the Earth. Written by
David Foss
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