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EN_01270334_7106
Cassini bids farewell to Saturn's yin-and-yang moon, Iapetus. This image is from the last set of observations Cassini made of this world of striking contrasts. The spacecraft helped scientists better understand Iapetus, solving a centuries-old mystery of why it should be bright on one side and dark on the other. Cassini observations of Iapetus (914 mile or 1471 kilometers across) support the prevailing theory that led to the understanding that the dichotomy of the surface is due to a combination of infalling dust from outside of the moon followed by a migration of water ice from the darker (therefore warmer) areas to the cold, brighter surfaces. See PIA11690 for more details. This false-color view is a composite of individual frames obtained using filters sensitive to ultraviolet (centered at 338 nanometers), green (centered at 568 nanometers) and infrared light (centered at 930 nanometers). The view has been enhanced to accentuate subtle color differences and fine-scale surface features. This view looks toward the Saturn-facing hemisphere of Iapetus. North on Iapetus is up and rotated 12 degrees to the left. The view was acquired at a distance of approximately 1.5 million miles (2.5 million kilometers) from Iapetus. Image scale is 9 miles (15 kilometers) per pixel. Image Credit: NASA/JPL-Caltech/Space Science Institute Please note: Fees charged by the agency are for the agency's services only, and do not, nor are they intended to, convey to the user any ownership of Copyright or License in the material. The agency does not claim any ownership including but not limited to Copyright or License in the attached material. By publishing this material you expressly agree to indemnify and to hold the agency and its directors, shareholders and employees harmless from any loss, claims, damages, demands, expenses (including legal fees), or any causes of action or allegation against the agency arising out of or connected in any way with publication of the material.
*** Editorial Use Only ***
Minimum price 50PLN
1902-01-01
NASA/Sipa USA/East News
Sipa USA
Sipa USA
sipausa_21187987
0,02MB
9cm x 4cm przy 300dpi
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