Explanation: Why caused this great white spot on the surface of Saturn's moon Rhea? The spot was first noticed last year by the robot Cassini spacecraft now orbiting Saturn. Cassini's flyby of Rhea in April imaged in the spot in great detail. Astronomers hypothesize that the light-colored spot is the result of a relatively recent impact on the surface of the icy moon. The impact that likely created the crater also splashed light-colored material from the interior onto the darker surface. Rhea spans 1,500 kilometers across and is the second largest moon of Saturn after Titan. Rhea sports several other light colored surface features that are, as yet, not well understood.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: Saturn - Rhea - Saturn - sputniki planet - KA Kassini Publikacii so slovami: Saturn - Rhea - Saturn - sputniki planet - KA Kassini
Sm. takzhe: Posadka na Titane zonda "Gyuigens" Polyarnoe siyanie vokrug severnogo polyusa Saturna Saturn noch'yu Luna zatmevaet Saturn Saturn u kraya Luny Cveta Saturna ot "Kassini" Polumesyac Encelada Vse publikacii na tu zhe temu >>