20 Things You Didn’t Know About… Aliens
Mar.21, 2007 in
Science
- Astronomers Margaret Turnbull and Jill Tarter of the Carnegie Institution in Washington, D.C., have compiled a list of 17,129 nearby stars most likely to have planets that could support complex life.
- According to Turnbull, stars must be at least 3 billion years old (to allow life time to evolve), have low mass, and have high levels of iron; metals are needed to form rocky, Earthlike planets.
- Leading the list is Epsilon Indi A, a dim orange star just 11.8 light-years away, in our local corner of the Milky Way.
- What’s the frequency, Frank? Astronomer Frank Drake made the first scientific attempt to contact alien beings in 1960, when he used an 85-foot radio dish at the National Radio Astronomy Observatory in West Virginia to listen for signals from two nearby sunlike stars.
- You haven’t heard about it because his search turned up zilch.
Read 15 more Things You Didn’t Know About… Aliens @ Discover Magazine >>>
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