News: Sciencedaily 4-5-2011
For the first time, scientists have found convincing evidence for the presence of liquid water in a comet, shattering the current paradigm that comets never get warm enough to melt the ice that makes up the bulk of their material.
"Current thinking suggests that it is impossible to form liquid water inside of a comet," said Dante Lauretta, an associate professor of cosmochemistry and planet formation at the UA's Lunar and Planetary Laboratory.
Breaking news: 18 november 2010,:
Mind also the "smooth waist" of the dumbbell shaped icy mass with two distinct spots of concentrated jets.
See also: Sciencedaily
"Deep Impact Spacecraft Successfully Flies by Comet Hartley 2"