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Because of the DAWN-mission

Posted by: Ekkehard Augustin - Wed Jun 27, 2007 9:39 am
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Because of the DAWN-mission 
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Post Because of the DAWN-mission   Posted on: Wed Jun 27, 2007 9:39 am
Assumed that DAWN confirms that Ceres is covered by a layer of water ice lots of km - perhaps 100 - thick and liquid oceans exist in the depth of the layer - which planet of both would your prefer regarding the search for life: the jovian Moon Europa or Ceres?

Please consider the aspect that Ceres is closer to the sun by a few 100 mio km.



Dipl.-Volkswirt (bdvb) Augustin (Political Economist)


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Post    Posted on: Fri Jul 13, 2007 8:43 pm
My vote is for Europa. The tidal forces that keep Io molten are the forces that will keep Europas possible ocean liquid--plus give rise to volcanic smokers that give off the ingrediants of chemosynthysis--the only mechanism to keep life-forms alive at that distance from the sun.

Ceres is likely dead.

But Europa is harder to get to. A small Delta II can get to Mars and just aerobrake and pop a chute. Ceres is small and also nearby.

But Europa will likely need Ares V, because it will take a sizable rocket to slow and deploy a lander that will have to burn its engines all the way down and deploy a cryobot to melt its way thru to swim around and visit smokers.

This demands heavy lift.


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Post    Posted on: Fri Jul 13, 2007 8:49 pm
Europa has the best chances for liquid water and therefore perhaps some sort of life. Even it was a tiny possibility against a most likely zero chance on Ceres, i don't call that a choice.


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