Sunday, 14 December 2014
Amazing details of Saturn & its moons captured by NASA
Image of Saturn Taken by Cassini Space Probe (Click Image to Download)
NASA’s Cassini spacecraft has been studying Saturn and its moons for a decade now, routinely delivering stunning images of the second largest planet in our solar system. One of its noteworthy achievements is that it is now shedding a lot more light on six moons that were once shrouded in mystery.
When NASA’s Voyager spacecraft flew by moons like Mimas, Enceladus, Tethys, Dione, Rhea, and Iapetus back in the 1980s, it sent back landmark images that were nevertheless fuzzy, incomplete, and hard to make out. Now, Cassini has plugged the holes – with bursts of color, no less – and delivered stunning new images of these icy satellites.
Here is a before/after shot of Mimas showcasing the differences between Voyager's image (left) and Cassini's (right).
"The most obvious [discoveries] are differences in color and brightness between the two hemispheres of Tethys, Dione and Rhea,” wrote Preston Dyches of NASA’s Jet Propulsion Laboratory. “The dark reddish colors on the moons' trailing hemispheres are due to alteration by charged particles and radiation in Saturn's magnetosphere.”
“Except for Mimas and Iapetus, the blander leading hemispheres of these moons – that is, the sides that always face forward as the moons orbit Saturn – are all coated with icy dust from Saturn's E-ring, formed from tiny particles erupting from the south pole of Enceladus."
You can view the rest of the images here. Impressively, however, these aren’t the only photographs of Saturn and its moons making headlines this week.
Source : RT.com