The plumes that come out of the tiger stripe cracks on Saturn’s moon Enceladus may be carbonated!
The Cassini image below, released today at the 42nd meeting of the AAS Division for Planetary Sciences, shows light reflecting off a lake on Titan’s northern hemisphere. According to the scientists who took the image, this is the first definitive confirmation of the presence of liquid in those lakes.
The Cassini spacecraft orbiting Saturn continues to send back a wealth of data, and some gob-smacking wonderful images. Below are two of the more recent examples. The first is not a computer-generated graphic: it shows the small moon Helene (21 miles across) during a fly-by on March 3, 2010, with Saturn’s atmosphere providing the background. The second captures Saturn’s two largest moons, with the smaller Rhea crossing in front of the larger Titan.
Spring on Titan brings sunshine and patchy clouds.
This breath-taking image of Saturn and its rings was taken by Cassini on July 19, 2009 and posted on the Cassini image gallery on August 27, 2010.
This stunning image of Saturn, taken by Cassini on June 24, 2010, shows the ring’s widening shadow across the planet. As the planet orbits the Sun the tilt of its rings relative to the Sun changes with time. In August 2009 the tilt was essentially zero, so that the shadow was very narrow. Since then the tilt has been increasing, as has the width of the shadow.
Scientists are beginning to unravel the wind patterns on Titan.
It appears we are entering the dry season on Titan. Scientists have observed a 1 meter drop in the levels of Titan’s methane lakes over the last four years as the seasons on the moon go from summer to fall. Fun quote: “[The scientists] report that the shoreline of Ontario Lacus receded by about 10 kilometers (6 miles) from June 2005 to July 2009.”
