Wednesday, Aug. 13, 2014: Saturn%u2019s moon Pandora (at right center) helps shape the narrow F ring. Pandora (50 miles, or 81 kilometers across) orbits outside the F ring, while another shepherd moon Prometheus (53 miles, or 86 kilometers across), orbits inside, both helping to prevent the ring from spreading. Cassini spacecraft took the image in visible light with the wide-angle camera on March 8, 2014. Image released Aug. 11, 2014. %u2014 Tom Chao Space Images, Space Photos, Nasa Jpl, Spacecraft, Mission Images, Saturns Moons, Alien Life Forms, Mini Moon, Image Of The Day
ガリレオ探査機がとらえた、木星の衛星イオの噴煙
土星の衛星
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