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Rings of Saturn. The full set of rings, imaged as Saturn eclipsed the Sun from the vantage of the Cassini orbiter, 1.2 million km (¾ million miles) distant, on 19 July 2013 (brightness is exaggerated). Earth appears as a dot at 4 o'clock, between the G and E rings.
22 de sept. de 2017 · Scientists have ideas about why Saturn has rings, but no one knows for sure. What are Saturn's rings made of? Are they solid like the CD you used to make your model? Or are they made of many particles dancing in formation around the planet? Four robotic spacecraft from Earth have visited Saturn—Pioneer 11, Voyager 1, Voyager 2 and ...
8 de nov. de 2017 · Saturn's rings are made up of billions of particles ranging from grains of sand to mountain-size chunks. Composed predominantly of water-ice, the rings also draw in rocky meteoroids as they...
29 de ago. de 2005 · The rings of Saturn make up an enormous, complex structure that – from edge-to-edge – is wider than the distance from Earth to the Moon. The seven main rings are labeled in the order in which they were discovered; from the planet outward, they are D, C, B, A, F, G and E.
Saturn’s Rings: Young and Ephemeral, Three NASA Ames Studies Say.
Cassini found that much of the material for Saturn's E-ring—a diffuse ring outside the bright, main rings—comes from the moon Enceladus, which is venting icy particles and gas into space as it orbits Saturn.
The particles in Saturn's rings are composed primarily of water ice and range from microns to metres in size. The rings show a tremendous amount of structure on all scales; features like spokes and irregular ripples, are puzzling.
