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The Hysteria Continues? PUSSYCASH INSANE PAYOUTS 2! Thread worth $4000!
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Uranus is the seventh planet from the Sun and the third largest (by diameter). Uranus is larger in diameter but smaller in mass than Neptune.Comment
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Neptune is the eighth planet from the Sun and the fourth largest (by diameter). Neptune is smaller in diameter but larger in mass than Uranus.Comment
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Titan, the largest moon of Saturn, has an atmosphere.Comment
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Saturn's other moons have icy surfaces that are very cold so that ice is as rigid as rock and craters form from meteor impacts. The mean densities of these moons are 1.0 to 1.5 g/cc, implying that they are probably mostly ice, though they may have some rocky consituents. Most of Saturns satellites (as for those of Jupiter) are tidally locked and keep the same face turned toward the planet as they orbit.Comment
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Other moons of Saturn include Mimas, which has an impact crater 1/4 the diameter of the moon, Enceladus, which may be geologically active because of tidal heating by Saturn, Tethys, which has a large flattened crater that is 1/2 the diameter of the moon and a very large canyon, and Dione, which is heavily cratered with ray structures associated with some craters.Comment
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Two small moons have been found to share Tethys's orbit, and one small moon shares Dione's orbit. This sharing of orbits had not been seen before the detailed investigation of Saturns system. Hyperion rotates chaotically because of the influence of Titan's gravity and a highly eccentric orbit. The outermost satellite, Phoebe, may be a captured asteroid.Comment
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In various instances now we know that ring structures in the Jovian planets are stabilized by small "shepherd moons" that orbit in or near the rings and stabilize them by their gravitational influences. One such example is the F-ring of Saturn, which is kept narrow by two small shepherd moons, Prometheus and Pandora, as illustrated in the adjacent image (click the button for labels). We shall find similar examples of shepherd moons for rings associated with other planets. Although such shepherd satellites clearly play a significant role in ring structures, we only partially understand the details of these roles.Comment
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I'm out for a nap.
Have a good evening, everyone. And good luck
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