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Observations

Observations

Opinion, arguments & analyses from guest experts and from the editors of Scientific American

Astroethics and Cosmocentrism

As astronomers forge ahead in their search for alien life, the ethical questions a discovery would raise are becoming more urgent

20 hours ago — Steven J. Dick

Captain America on Mars

The Marvel hero's origin story has implications for human adaptation to living on other planets

August 3, 2018 — E. Paul Zehr

Blog Index

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50% off for Back to School