The Comet Is Now Close But The Moon Is Bright: Why To Use Binoculars And Forget About Dark Skies

Evidence that Saturn's moon Mimas is a stealth ocean world

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A spaceflight disaster was narrowly avoided in 1972. A series of intense solar flares exploded in August, just months before the launch of Apollo 17. Any astronauts on the moon at that time would have died from radiation. As NASA's new lunar missions progress, the threat of radiation still looms.