43:59 minutes (21.12 MB)
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Astronomers have been watching the beginnings of an earth-like planet near a distant star. So, what can this tell us about our own beginnings?
Wesleyan University astronomer William Herbst is leading the team of astronomers watching how tiny particles are beginning to come together around a binary star called KH 15D. This so-called "winking star" is about 25 thousand light years away - but the composition of this planetary mass has scientists excited.
Today, where we live, Bill Herbst will join us to talk about this discovery and what it means to studying our own history. And, we'll talk with Geologist Mark McMenamin about the many stages in the formation of a planet like earth.
See a Flash animation of Herbst's team observed here.
For a complete gallery of pictures from todayâ€™s show, visit WNPR Images on Flickr.com.
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