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Terra Incognita: How Many "Earths" Are There?

November 7, 2013



"There could be tens of billions of these (Earth-like) planets just in our galaxy."

Todd Slisher, astronomer and Director of Visitor Experiences at the Michigan Science Center.

While humans might be alone in the universe, the Earth probably isn’t. New data suggest there are many planets like ours in our own galaxy, orbiting stars similar to the Sun. And there may be billions of Earth-like objects scattered across the cosmos. Scientists calculated the probabilities using information gathered from the Kepler space telescope. Todd Slisher is an astronomer and the Director of Visitor Experiences at the Michigan Science Center in Detroit. He tells WDET's Pat Batcheller that scientists have learned a lot from Kepler. Click on the audio link above to hear the conversation.

The Michigan Science Center is featuring information on the ISON comet at its "What's Up?" programs this month. Learn more here.