• A series of four photos of Neptune, taken over two years, show a pale blue planet with some white clouds. A small dark smudge in the planet's southern hemisphere changes size in each photo, gradually shrinking.
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    Neptune’s Great Dark Spot had disappeared by the time the Hubble Space Telescope set its sights on the ice giant in 1994. Hubble images taken between 2015 and 2017 revealed another shrinking dark spot that at one point was almost as big as China.

  • A series of four photos of Neptune, taken over two years, show a pale blue planet with some white clouds. A small dark smudge in the planet's southern hemisphere changes size in each photo, gradually shrinking.

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February 19, 2018

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