James Green, director of Planetary Science at NASA Headquarters, speaks during a panel discussion at the "Solar System and Beyond: NASA's Search for Water and Habitable Planets" event on Tuesday, April 7, 2015 at NASA Headquarters in Washington, DC. Panelists discussed the recent discoveries of water and organics in our solar system, the role our sun plays in water-loss in neighboring planets, and our search for habitable worlds among the stars. (NASA/Joel Kowsky}

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Keywords: dc, green, headquarters, james, joel, kowsky, nasa, solar, system, usa, washington