Question: Which of these two moons is larger, and which of them is further away? Answer: Dione (top right) is both larger and further away than Enceladus (bottom left). Dione is twice the diameter of Enceladus (1123 km vs. 504 km), and from Cassini’s vantage point in this image acquired on December 1, 2010, Dione is 830,000 km away, versus Enceladus’s 510,000 km. Bad Astronomy, Universe Today. Credit: NASA/JPL/Space Science Institute.
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