Astrophysicist Lisa Kaltenegger is looking for life on exoplanets. She combs data from space telescopes to find signs of water, oxygen or methane in other star systems. And she is confident that if extraterrestrial life exists it will be found soon.
The planets are likely the right size and right temperature to support complex life. The Kepler planet-searching telescope has detected nearly 50 such planets in one small part of the observable universe.
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