Luyten b: One of the most promising candidates for another Earth yet
Searching for extraterrestrial life is like trying to meet someone in Manhattan with no prearranged place or time
Something 20 times Jupiter's size may be orbiting a nearby star
Dale Andersen, a researcher at the SETI Institute, discusses everything from microbes in Antarctica to intelligent extraterrestrials.
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Scientists begin the search for DNA on Mars
SETI has come a long way over the years, but is the search really important?