Southwest Research Institute (SwRI) scientists are studying Saturn's moon Titan to assess its tidal dissipation rate, the ...

The Titan illustration is his most famous space ... like a giant’s belt-buckle. Part of the planet is shadowed, blending into the cobalt-turquoise sky. The whole of it is weirdly grand.

Why it's so special: This picture was taken by the European Space Agency's Huygens probe during its historic parachute descent onto Titan's surface on Jan. 14, 2005. At the moment this image was ...