After many years of analysis, a team of scientists using NASA’s Hubble Space Telescope has finally come up with an explanation for the mysterious moon around Neptune that they discovered with the Hubble in 2013.
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So why does the tiny moon exist? Hippocamp is likely a chipped-off piece of the larger moon that resulted from a collision with a comet billions of years ago. The diminutive moon, only 20 miles (about 34 kilometres) across, is 1/1000th the mass of Proteus (which is 260 miles [about 418 kilometres] across).
Image Credits: NASA, ESA and J. Olmsted (STScI)
Source: neatorama