Astronomers find 'comet's tail' trailing Neptune-sized exoplanet

They call it "the Behemoth." Astronomers using NASA's Hubble Space Telescope have discovered that a red dwarf star is boiling off the atmosphere of a Neptune-sized exoplanet, causing it to form an enormous cloud that surrounds and trails the planet like a comet's tail.

via L.A. Times - Science http://ift.tt/1KdZZ4t