[Bluestrike2]

Neither article focuses solely on hydrogen. The Discover article is about interstellar ice, while the Guardian article above is about the observation of water vapor:

> Scientists from the University of Maryland used Hubble’s wide field camera to analyse light from HAT-P-11b’s host star through the planet’s atmosphere. They found that light with a wavelength of 1.4 micrometres was absorbed, matching the absorption spectrum of water molecules.