The atmospheric carbon dioxide was thought to be the result of the oxidation of oxygen molecules in the exosphere. As a ...
Add Yahoo as a preferred source to see more of our stories on Google. On Dec. 23, 1672, Italian astronomer Giovanni Cassini discovered Rhea, Saturn’s second-largest moon. Rhea is made up of rock and ...
Astronomy on MSN
The sky today on Monday, January 26: Saturn's moons in motion
Looking for a sky event this week? Check out our full Sky This Week column. January 25: Aries' Hoofprint Saturn's four ...
Astrum on MSN
What makes Rhea one of the strangest moons studied
Rhea, one of Saturn’s largest moons, has been studied for decades, yet much of it remains surprisingly uncertain. Data from ...
(PhysOrg.com) -- In a flyby past Rhea, Saturn's second-largest moon, NASA's spacecraft Cassini has revealed the presence of a thin atmosphere of 70 percent oxygen and 30 percent carbon dioxide, which ...
LONDON (Reuters) - Saturn's second-largest moon Rhea may have a small ring around it -- the first time a moon has been found to have a ring, an international team of researchers reported on Thursday.
Saturn leads the solar system with 274 moons. From Titan’s methane lakes to Enceladus’ geysers, explore the diverse worlds of ...
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