Lunar night puts Japan's lander back to sleep

After a brief awakening, Japan's moon lander is out of action again but will resume its mission if it survives the two-week lunar night, the space agency said Thursday.

Fish are adapting to weightlessness on the Chinese space station

Four zebrafish are alive and well after nearly a month in space aboard China's Tiangong space station. As part of an experiment testing the development of vertebrates in microgravity, the fish live and swim within a small ...

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