The Guardian
Aug 28, 2023 - 8 min
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Is Earth the only living planet?
12 mins | Sep 10, 2019
The director of the Carl Sagan Institute is optimistic about the search for extraterrestrial life. Across our galaxy, more than 40 billion planets are waiting to be discovered, and for scientist Lisa Kaltnegger the hope is that among them, life may be waiting too.
