Tiny life-forms can move easily between these recently described planets, according to a study of the travel times between worlds.
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“Are We Alone in the Universe?” Winston Churchill's Lost Extraterrestrial Essay Says No
September 20, 2017The famed British statesman approached the question of alien life with a scientist’s mind
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This Week's Sky at a Glance, February 17 – 25 – Sky & Telescope
February 20, 2017