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Dione's thin oxygen exosphere

2 March 2012

Image of Saturn's icy moon Dione. Credit: NASA/JPL/Space Science Institute

Dione is a moon of Saturn, discovered in 1684 by the Italian astronomer Giovanni Cassini. Over 300 years later, planetary scientists including Andrew Coates and Geraint Jones from MSSL-UCL, have discovered that Dione has a weak exosphere near its surface (at planets with denser atmospheres, the exosphere is the outermost layer of its atmosphere). This work was featured on BBC News Online and is also the feature of a science nugget on the planetary science group website.

Page last modified on 02 mar 12 13:46