The search for extraterrestrial life continues to captivate our imagination from "summary" of Astrophysics for People in a Hurry by Neil deGrasse Tyson
Jupiter's moon Europa is thought to have a subsurface ocean twice the volume of Earth's oceans combined. Enceladus, a moon of Saturn, has geysers erupting from its south pole, venting water vapor and ice particles into space. These moons are just two of several worlds in our solar system where life might exist beyond Earth. We envision aliens as little green humanoids with large eyes and spindly limbs, but life could take forms we cannot begin to imagine. Perhaps it thrives in environments we consider hostile, such as the acidic clouds of Venus or the frozen deserts of Mars. The search for extraterrestrial life pushes the boundaries of our understanding and challenges us to think beyond the familiar. The possibility of fi...
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