/

Cassini captures stunning image of Dione’s transit of Saturn

While the image is stunning, it has a practical purpose, too. By timing transits in the Saturn system, scientists can more precisely determine the orbital parameters of Saturn’s moons, given they know Dione’s diameter is 1,123 kilometres.

This view looks toward the unilluminated side of the rings from about 0.3 degrees below the ring plane. The image was taken in visible green light with the Cassini spacecraft narrow-angle camera on 21 May, 2015.

The view was acquired at a distance of approximately 2.3 million kilometres from Saturn.

For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov or http://www.nasa.gov/cassini The Cassini imaging team homepage is at http://ciclops.org

Bill Condie

Bill Condie

Bill Condie is a science journalist based in Adelaide, Australia.

Read science facts, not fiction...

There’s never been a more important time to explain the facts, cherish evidence-based knowledge and to showcase the latest scientific, technological and engineering breakthroughs. Cosmos is published by The Royal Institution of Australia, a charity dedicated to connecting people with the world of science. Financial contributions, however big or small, help us provide access to trusted science information at a time when the world needs it most. Please support us by making a donation or purchasing a subscription today.