Blog posts tagged with cassini

Posts in the past four weeks

Sep 01 2015
05:05 UTC

Transit of Dione

This is the moon Dione seen against a background of Saturn, what is known as a transit. ĀThe image gives a good perspective of just how large Saturn is. The view is from 2. 4 million km / 1. 4 million miles from Cassini to Saturn and Dione is 1123 km / 698 miles across. Transits are […]

Posted by Tom's Astronomy Blog

Aug 24 2015
10:30 UTC


Here are a couple more images from Cassini's final flyby of the Saturn moon Dione. The image above was taken as Cassini was heading towards the moon. The impact basin on the lower right is called Evander and is about 350 km / 220 miles wide. On the left you can see the bright Padua […]

Posted by Tom's Astronomy Blog

Aug 21 2015
10:58 UTC

Nearing Dione

As Cassini neared the Saturn moon Dione it captured this image of the moon in front of Saturn's rings. When the image was taken Cassini was 158,000 km / 98,000 miles away on 17 August. We see the southern part of the moon in the image – north is up. This is the final flyby […]

Posted by Tom's Astronomy Blog

Aug 19 2015
18:22 UTC

Cassini's Farewell Look at Dione

NASA's Cassini spacecraft paid a visit to Saturn's moon Dione this week, one final time. Cassini passed just 474 kilometers (295 miles) above the surface of the icy moon on Monday, August 17th at 2:33 PM EDT/18:33 UT. The flyby is the fifth and final pass of Cassini near Dione (pronounced dahy-OH-nee). The closest passage […]

Posted by Universe Today

Aug 18 2015
05:05 UTC

The Last at Dione

Cassini took this image of the Saturn moon Dione in the last flyby of the moon. The main mission for Cassini ended in June 2008. The Cassini Equinox Mission was the first mission extention and ran until September 2010. The current (and second) mission extention called the Solstice Mission is scheduled to end in September […]

Posted by Tom's Astronomy Blog

Aug 11 2015
10:35 UTC

Saturn’s Atmosphere

The Cassini spacecraft took this image with an infrared filter on its camera. This particular filter is sensitive to infrared wavelengths absorbed by methane. There isn't a lot of methane in Saturn's atmosphere but there is enough to make a difference in how much light is reflected by different clouds. The darker areas are showing […]

Posted by Tom's Astronomy Blog

Aug 06 2015
05:05 UTC

Giant Saturn

The two moons against a backdrop of Saturn and the ring plane are: Mimas – about 200,000 km / 124,000 miles from Saturn with an orbital period of about 23 hours, and Dione – about 377,400 km (234,000 miles) from Saturn with an orbital period of about 2. 7 Earth days (~ 65 hours). From the […]

Posted by Tom's Astronomy Blog

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