arch27

EN_01270334_7105
arch27
This view from NASA's Cassini spacecraft shows a wave structure in Saturn's rings known as the Janus 2:1 spiral density wave. Resulting from the same process that creates spiral galaxies, spiral density waves in Saturn's rings are much more tightly wound. In this case, every second wave crest is actually the same spiral arm which has encircled the entire planet multiple times. This is the only major density wave visible in Saturn's B ring. Most of the B ring is characterized by structures that dominate the areas where density waves might otherwise occur, but this innermost portion of the B ring is different. 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.
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arch27
1902-01-01
NASA/Sipa USA/East News
Sipa USA
Sipa USA
sipausa_21188087
0,37MB
9cm x 9cm by 300dpi
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