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Space50 years ago, cosmic rays may have caused Apollo astronauts to see lights
Apollo astronauts reported seeing flashes of light where there were none. Fifty years later, the flashes still mess with modern astronauts’ vision.
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LifeIn one lake deep under Antarctica’s ice, microbes feast on ancient carbon
Microorganisms living in a lake beneath the ice sheet in West Antarctica feed on ocean carbon that was deposited 6,000 years ago.
By Freda Kreier -
AstronomyA reappearing supernova offers a new measure of the universe’s expansion
Supernova Refsdal blew up once but burst into view at least five times. The timing of its appearances provides clues to how fast the universe is growing.