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Stories by Caleb Scharf

Alone in a Crowded Milky Way

Even a galaxy teeming with star-hopping alien civilizations should still harbor isolated, unvisited worlds—and Earth might be among them

December 30, 2019 — Caleb Scharf

A Fantastic Journey through Cosmic Scales

A new, epic voyage through all known scales of reality charts the outer limits of existence, from the edge of the observable universe to the subatomic realm

November 7, 2017 — Caleb Scharf and Ron Miller

Is Earth's Life Unique in the Universe?

To know whether life exists beyond Earth, we must come to terms with our own significance in the universe. Are we uniquely special or merely mediocre?

August 4, 2014 — Caleb Scharf
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