When Dawn studied Ceres more closely from orbit, what did the famous, attention-grabbing feature turn out to be? a Deposits of salt on the floor of Occator crater b A large patch of bare, exposed water ice c A large geyser of liquid water actively shooting out of the surface d A nitrogen-ice glacier, very similar to Pluto's Sputnik Planum

When Dawn studied Ceres more closely from orbit, what did the famous, attention-grabbing feature turn out to be? a Deposits of salt on the floor of Occator crater b A large patch of bare, exposed water ice c A large geyser of liquid water actively shooting out of the surface d A nitrogen-ice glacier, very similar to Pluto's Sputnik Planum

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Planetary scientists are excited about the possibility that some of the moons in the outer solar system might have a global subsurface ocean of liquid water. It's uncertain whether or not Jupiter's moon Callisto has a subsurface ocean, but some scientists think it might. Let's imagine that a short distance below the surface, Callisto has a water layer 20,000 meters thick. Callisto has a radius of 2.410x106 meters. Earth has a radius of 6.378x106 meters, and its oceans are equivalent to a layer of water 3000 meters thick all over the surface of the planet. Which of the following is an accurate comparison of the Earth’s amount of liquid water with this estimate of the amount of water Callisto might have? Group of answer choices If this scenario is correct, Earth and Callisto have roughly the same amount of liquid water. If these scientists are right, Callisto has about one-sixth as much liquid water as the Earth does. If these scientists are right, Callisto has about 11 times as…
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_____ km/s ______ hr
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