Picture of the largest
of Saturn's Titan, made by NASA's Cassini spacecraft in the dark, showed a
mysterious glow of Titan's atmosphere.
If you were standing on
the surface of Titan, you would not notice this glow, as his power is only a
few millionths of a watt. The scientists were able to fix this weak light with
a camera apparatus Cassini, allowing you to take pictures with a long exposure.
