August 27th-September 2nd 2016
27 Aug 2016
Brave new worlds
IT MAY turn out to be a bare and barren rock. The fact that liquid water could be flowing across the surface of the planet just discovered orbiting Proxima Centauri, the nearest star to the sun, does not mean that any actually is—nor for that matter that it has an atmosphere…
Aug 27th-Sep 2nd, 2016:
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