Cool Nebulas and Galaxies nebulosa de la tarántula wikipedia la enciclopedia libre Nebulas and Cool Galaxies

Cool Nebulas and Galaxies nebulosa de la tarántula wikipedia la enciclopedia libre Nebulas and Cool Galaxies

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Cool Nebulas and Galaxies

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Despite this oddball moon's many exotic attributes, it actually sports one of the most Earth-like surfaces in our Solar System. Titan may also experience volcanic activity, but its volcanoes would erupt with different ingredients than the molten-rock lava that shoots out from the volcanoes of Earth. In dramatic contrast to what occurs on our own planet, Titan's volcanoes erupt icy water "lava" (cryovolcanism). Titan's entire alien surface has been sculpted by gushing methane and ethane, which carves river channels, and fills its enormous great lakes with liquid natural gas.



The scientists also ruled out the possibility that the mysterious features actually exist on Titan's surface in the form of frozen methane rain or icy lava erupted from cryovolcanoes. Such surface features would show a different chemical signature and would be visible for much longer periods of time than the bright features observed in this study. The bright features were visible from time spans of only 11 hours to five weeks.



The rifts themselves are buried far, far down, deep beneath dark volcanic plains on the near-side of our Moon and have been spotted only in the gravity data provided by GRAIL. The lava-flooded rift valleys are not like anything seen anywhere else on the lunar surface--but some planetary scientists think that they may have, at one time, long ago, resembled rift zones on our own planet, Venus, and Mars. The new findings are published in the October 1, 2014 issue of the journal Nature.