(PhysOrg.com) -- Just as the lead characters in the popular Broadway musical "Wicked" sing about defying gravity, the low-Earth orbiting twin spacecraft of NASA's Gravity Recovery and Climate Experiment (GRACE) ...

Space & Earth - Space Exploration

Mar 19, 2012 5 / 5 (3) 0

(PhysOrg.com) -- The audience laughs and applauds as the performers on stage pull trick after trick from their sleeves: suspending a ball in midair, defying gravity, turning water into ice right before people's ...

Other Sciences - Other

Jul 13, 2010 4.2 / 5 (5) 1