Vesta likely cold and dark enough for ice
Wednesday, January 25, 2012 - 14:30
in Astronomy & Space
(PhysOrg.com) -- Though generally thought to be quite dry, roughly half of the giant asteroid Vesta is expected to be so cold and to receive so little sunlight that water ice could have survived there for billions of years, according to the first published models of Vesta's average global temperatures and illumination by the sun.