Saturday, July 10


Ok, fellow space buffs. Here is one that will sound a resounding 'duh' but only is given the time to be thought about: New vs Old. This image of Enceladus shows smooth terrain that gives way to cratered terrain. Though I have never seen an 'impact crater' being made, one would have to agree craters are formed by impact. We will therefore assume, (there's that word again) the smooth terrain is newer than the cratered terrain. or.... perhaps the smooth terrain has been heated to "melt" the surface smooth, as the surface is frozen, meaning that something inside the moon is causing heat. Remember this is the moon with the active geysers of ice and organic materials. Studies have shown evidence that heat is required for a geyser to erupt.  
As I see it, the knowledge we obtain can often lead to more questions.

for image details and credits

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