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Caleb Scharf
Astrobiologist and senior scientist for astrobiology at NASA Ames Research Center; author and researcher known for books and writings on cosmology, astrobiology, and the future of life in space, and recipient of the Carl Sagan Medal.
Best podcasts with Caleb Scharf
Ranked by the Snipd community
Dec 2, 2025
• 1h 34min
Are We Meant to Leave Earth? Why Humanity May Have No Choice but to Go to Space
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Astrobiologist Caleb Scharf, a senior scientist at NASA Ames and author of The Giant Leap, explores humanity's future in space. He argues our expansion beyond Earth might be an evolutionary necessity. Scharf discusses the challenges of radiation and microgravity on human biology and why terraforming Mars is unrealistic. Instead, he suggests building rotating habitats in space for sustainability. The conversation also touches on the evolution of space technology and the role of private companies reshaping exploration. This engaging dialogue dives deep into our cosmic destiny.
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