Caleb Scharf
Caleb Scharf is an astrobiologist, author, and recipient of the 2022 Carl Sagan Medal. His latest book is The Giant Leap: Why Space is the Next Frontier in the Evolution of Life.
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Is Physical Law an Alien Intelligence?
Alien life could be so advanced it becomes indistinguishable from physics.
November 11, 2016
Life Beyond the Pale Blue Dot
Our own oasis of life in the cosmos is blue, but will others be?
June 25, 2015
Don’t Write Off ET Quite Yet
It’s true that we haven’t seen alien life, but neither have we seen much of the universe.
December 17, 2014
Can You Ever Really Know an Extraterrestrial?
Knowledge about aliens might be as dangerous as the aliens themselves.
September 2, 2014
Goodbye Copernicus, Hello Universe
Our insignificance, and significance, on a cosmic scale
April 22, 2013