Science editor at NBCNews.com, Cosmic Log blogger, author of The Case for Pluto
How many folks can say they've been helped out of a shuttle cockpit by NASA's chief?
Pluto on the Christmas tree ... #plutolives
Gollum is the star at Wellington airport for #Hobbit premiere. We're there & back again
EDL!EDL! Flag-waving team high-fives @MarsCuriosity leaders amid hoots and hollers. #MSL
June Lockhart of "Lost in Space" and "Lassie" in JPL newsroom. @MarsCuriosity #msl
Here's @TheScienceGuy at @SpaceX Dragon on the night before Planetfest in Pasadena
The @SpaceX Dragon (mockup) has arrived in Pasadena #awesome
The #superguppy has landed
One #superguppy comin' at ya!
Sunbow at Arch Cape, OR #vacationthrills
Sandcastle contest at Cannon Beach, OR
Our chariot awaits on Oregon's Rogue River
Gregory Schneider discusses #spacerace2012 win w/trophy and tears
Here's @therealbuzz at #spacerace2012
Greg Schneider discusses #spacerace2012 win w/ trophy and tears
I'm on the frickin top of the Space Needle #spacerace2012
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