Big exoplanet may be surrounded by helium
No hydrogen found around Neptune-sized planet
![helium-rich skies](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/06/cc_exoplanet_free.jpg?fit=860%2C460&ssl=1)
SQUEAKY PLANET A world with helium-rich skies (illustrated) might be blanketed in white or gray clouds, researchers report.
JPL-Caltech/NASA
No hydrogen found around Neptune-sized planet
SQUEAKY PLANET A world with helium-rich skies (illustrated) might be blanketed in white or gray clouds, researchers report.
JPL-Caltech/NASA