Helium-Shrouded Planets May Be Common around Other Stars in Our Galaxy

Using data from NASA’s Spitzer Space Telescope, astronomers propose that helium atmospheres may be found on thousands of warm Neptune- and sub-Neptune-sized exoplanets in our galaxy. They wouldn’t float like balloons or give you the chance to talk in high, squeaky voices, but planets with helium skies may constitute an exotic planetary class in our […]
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