Headlines > News > The Map of Dione

The Map of Dione

Published by Klaus Schmidt on Fri Nov 7, 2014 10:29 am via: NASA
Share
More share options
Tools
Tags

This cylindrical projection global map is one of six new color maps of Saturn’s midsized icy moons, constructed using 10 years of image data from the Cassini spacecraft. Discovered by Cassini (the astronomer) in 1684, Dione is about 1,120 kilometers across. Based on data extending from infrared to ultraviolet, the full resolution of this latest space-age map is 250 meters per pixel.

The remarkable brightness difference between the tidally locked moon’s lighter leading hemisphere (right) and darker trailing hemisphere clearly stands out. Like other Saturn moons orbiting within the broad E-ring, Dione’s leading hemisphere is kept shiny as it picks up a coating of the faint ring’s icy material. The E-ring material is constantly replenished by geysers on moon Enceladus’ south pole. Lighter, younger surface fractures also appear to cross the dark, cratered trailing hemisphere.

Image Credit: Map - Paul Schenk (LPI), Image Data - Cassini, ISS, JPL, ESA, NASA

Image Credit: Map - Paul Schenk (LPI), Image Data - Cassini, ISS, JPL, ESA, NASA

No comments
Start the ball rolling by posting a comment on this article!
Leave a reply
You must be logged in to post a comment.
© 2017 The International Space Fellowship, developed by Gabitasoft Interactive. All Rights Reserved.  Privacy Policy | Terms of Use