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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A Wrinkle in Nature Could Lead to Alien Life
There may be more than one way to tune a universe for life.
April 21, 2021
The Alien-Haunted World
Are space scientists too conservative and close-minded about the possibility that ET exists?
February 14, 2021
Who Said Nobody Read Isaac Newton?
It’s a myth that legendary works in science aren’t read.
January 20, 2021
We Never Know Exactly Where We’re Going in Outer Space
Adventures in space travel remind us how imprecisely we measure reality.
November 4, 2020
Take Our Virtual Trip to Mars
See where NASA’s Mars 2020 mission will go and what it may find.
September 1, 2020
The Universe Has Made Almost All the Stars It Will Ever Make
Black holes are cosmic dimmers.
August 19, 2020
The Trouble with Counting Alien Civilizations
Life on Earth is a sketchy guide to intelligent life in the cosmos.
June 24, 2020

