Hubble Reveals Origins of Hippocamp — The Tiny Moon of Neptune that Shouldn’t Be There

Hippocamp is a tiny moon born of planetary violence, according to research conducted using the Hubble Space Telescope (HST). This tiny natural satellite appears to have broken off, billions of years ago, from its larger companion, Proteus.

Astronomers using the Hubble Space Telescope discovered Hippocamp in 2013, but the discovery came with an intriguing question. The moon was found orbiting as close as 12,000 kilometers (7,500 miles) to the much-larger neighbor, Proteus. Such close…

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The Cosmic Companion

The Cosmic Companion

Writing about space since I was 10, still not Carl Sagan. Weekly video show, podcast, comics, more: www.thecosmiccompanion.net