Tiny discs can levitate in the upper atmosphere using sunlight alone

A physics phenomenon discovered 150 years ago allows tiny objects to levitate using just sunlight – and now it could enable swarms of sensors to explore part of Earth’s long-neglected upper atmosphere

SINSIN
Aug 13, 2025 - 22:00
 0  18
Tiny discs can levitate in the upper atmosphere using sunlight alone
A physics phenomenon discovered 150 years ago allows tiny objects to levitate using just sunlight – and now it could enable swarms of sensors to explore part of Earth’s long-neglected upper atmosphere

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