Originally posted by wstevenbrown+Jul 12 2005, 05:15 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (wstevenbrown @ Jul 12 2005, 05:15 PM)</td></tr><tr><td id='QUOTE'> This is a worn-out captured comet. The voids are left from evaporating pockets of methane, neon, etc. [/b]
I'd be willing to believe that this thing and comets had similar origins. It seems unlikely to me that it was a captured comet that had been to the inner Solar System.
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Or it may also mean the object is composed of compounds less dense than water[/quote]
I had the same thoughts. There aren't many non-porous materials that have a density of 0.60. (For example Methane Ice has a density of about 0.50, Methyl alcohol is about 0.80, I'm guessing that Ammonia Ice would also be fairly light compared to water ice.
The image could be deceiving, but Hyperion DOES look porous.
Forming opinions as we speak