Author: Lisa Grossman / Source: Science News
With no luck so far in a six-decade search for signals from aliens, you’d be forgiven for thinking, “Where is everyone?
”A new calculation shows that if space is an ocean, we’ve barely dipped in a toe. The volume of observable space combed so far for E.T. is comparable to searching the volume of a large hot tub for evidence of fish in Earth’s oceans, astronomer Jason Wright at Penn State and colleagues say in a paper posted online September 19 at arXiv.org.
“If you looked at a random hot tub’s worth of water in the ocean, you wouldn’t always expect a fish,”…
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