Ryan Bechtel, Department of Energy
Talking about the nuclear power and heat unit for @MarsCuriosity. 
Jim Green and @tomtommorow (foreground)
Jim is director of Planetary Science at NASA. #MSL #NASATweetup is his first Tweetup. 
About me
As I travel about in my duties as Just and Beneficent Ruler of the Universe (Really! Just ask me!) I find and share things that meet with my approval.
