Hyperion is Porous

[sheeny (Al)]

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/2007/0707...070702-11.html

Al.

[Outbackmanyep]

Could it be similar in composition to comets?? Very intriguing!
The pics that Cassini has sent back of Hyperion are stunning!!!!!

[Dennis]

Mate – you had me reaching for my Baader 21mm Hyperion to check it out for water ingress, before I read your full article.

Cheers

Dennis