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.
The researchers were
surprised to find that the picture glow emanates not only from the top of
Titan's atmosphere - where it would be expected - but also from the deeper
layers below the atmospheric "haze" of Titan, which is a couple of
volatile organic compounds.
Scientists believe that
the emission of visible light from the deep layers of Titan's atmosphere may be
caused by deeply penetrating cosmic rays or the chemical reaction involving
glow.
The study was published
in the journal Geophysical Research Letters.
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