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

  • Written by Cole Mathis, Assistant Professor of Complex Adaptive Systems, Arizona State University
Why do astronomers look for signs of life on other planets based on what life is like on Earth?Hunting for life on other worlds isn't easy.Victor Habbick Visions/Science Photo Library via Getty ImagesWhy do astronomers look for signs of life on other planets based on what life is like on Earth?

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