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TagMarcelo Gleiser (on extraterrestrial life)


Physicist: Why Extraterrestrials Couldn’t Look Much Like Us

Except in films. They follow the same natural laws but conditions differ on each planet

Physicist Marcelo Gleiser, author of The Island of Knowledge (2014), points out that the fact that there are trillions and trillions of worlds in our universe does not mean that anything we imagine can somehow exist: While the laws of physics and chemistry allow for similar processes to unfold across the Universe, they also act to limit what is possible or viable. Even if science doesn’t allow us to completely rule out what cannot exist, we can use the laws of physics and chemistry to infer what might. Marcelo Gleiser, “What is life like elsewhere in the Universe?” at Big Think (December 22, 2021) There is limit to diversity. While it may be possible for life to be based on…