Spaced Out

For the first time in a long time, here comes the Space Stuff:

Cassini orbits Saturn, finds cool stuff:
http://www.space.com/scienceastronomy/080707-mm-cassini-findings.html

Volcanic activity on Mercury?
http://www.space.com/scienceastronomy/080703-mercury-messenger.html

Earth: Just Right, Goldilocks:
http://www.space.com/scienceastronomy/080708-st-special-earth.html

Moon Rings?

Rhea, one of the moons of Saturn, may have a ring system, according to Science.

http://www.sciencemag.org/cgi/content/short/319/5868/1380

From NASA, for the laymen amongst us (myself included):

http://www.nasa.gov/mission_pages/cassini/media/rhea20080306.html