Why do astronomers look for signs of life on other planets based on what life is like on Earth?

Why do astronomers look for signs of life on other planets based on how life is on Earth? Couldn’t there be totally different kinds of life on other planets? – Henry, age 13, Somerville, Massachusetts Have you ever played hide-and-seek in a new place? It’s much harder than playing at home. You only know theContinue reading “Why do astronomers look for signs of life on other planets based on what life is like on Earth?”
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