sheeny
10-07-2007, 07:59 AM
An article in nature today confirms that Hyperion (one of Saturn's moons) is porous all the way through. It lacks the mass for it's own gravity to consolidate it into a solid rocky moon. This means some other small low density bodies may also be porous rock rather than low density ices.
http://www.nature.com/news/2007/070702/full/070702-11.html
Al.
http://www.nature.com/news/2007/070702/full/070702-11.html
Al.