Dave Mosher is a science reporter who has written for Scientific American, Popular Mechanics, National Geographic News and Discovery.com. He joins Hari Sreenivasan to discuss planetary protection.
For years, distant stars were thought to be planet-free, but we now know they have rings of exoplanets. Sara Seager is a pioneer in the field of exoplanet characterization. In a Google Hangout with reporter Andrea Vasquez, Seager discusses the importance of not only charting these exoplanets, but also naming them.