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Pasadena CA (JPL) Aug 19, 2010 NASA's Cassini spacecraft has returned Saturnian moon images from its flyby late last week, revealing light and dark contrasts worthy of chiaroscuro painters like Caravaggio. The flyby on August 13 targeted the geyser moon Enceladus, but also brought Cassini close to two other moons--Tethys and Dione. The raw images include the best ones to date of Penelope crater on the icy moon Tethys . Penelope crater, which is 150 kilometers (90 miles) wide, is the second-largest crater on Tethys. Cassini was also able to obtain a portrait of Enceladus over the bright arc of Saturn's atmosphere and a moody still life of one of the "tiger stripe" fissures at the Enceladus south polar region on the cusp of darkness . This particular "tiger stripe" - which is the nickname for the fissures spewing water vapor and organic particles out into space - is called Damascus Sulcus. It was also the subject of a heat scan by Cassini's composite infrared spectrometer. Scientists are still analyzing the results.
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Cassini Bags Enceladus 'Tigers'Pasadena CA (JPL) Aug 16, 2010 NASA's Cassini spacecraft has successfully completed its flyby over the "tiger stripes" in the south polar region of Saturn's moon Enceladus and has sent back images of its passage. The spacecraft also targeted the moon Tethys. The tiger stripes are actually giant fissures that spew jets of water vapor and organic particles hundreds of kilometers, or miles, out into space. Whil ... read more |
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