Credit: NASA, ESA, and D. Player (STScI)

This artist's illustration shows a giant cloud of hydrogen streaming off a warm, Neptune-sized planet just 97 light-years from Earth. The exoplanet is tiny compared to its star, a red dwarf named GJ 3470. The star's intense radiation is heating the hydrogen in the planet's upper atmosphere to a point where it escapes into space. The alien world is

losing hydrogen at a rate 100 times faster than a previously observed warm Neptune whose atmosphere is also evaporating away.

Provider: Space Telescope Science Institute

Image Source: https://hubblesite.org/contents/news-releases/2018/news-2018-52

Curator: STScI, Baltimore, MD, USA

Image Use Policy: http://hubblesite.org/copyright/