INNER MONGOLIA, CHINA - NOVEMBER 14: The return capsule of the Shenzhou-21 spaceship, carrying the Shenzhou-20 astronauts Chen Dong, Chen Zhongrui, and Wang Jie, touches down at the Dongfeng landing ...
California-based startup Reflect Orbital aims to build a swarm of 4,000 giant mirrors in low Earth orbit to "sell sunlight" to customers at night. Experts warn that the mirrors could mess with ...
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