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An illustration of GJ 9827 d a tiny, hot and steamy exoplanet around which Hubble has discovered water vapor. (Image credit: NASA/ESA/Leah Hustak (STScI)/ Ralf Crawford (STScI))
An illustration of GJ 9827 d a tiny, hot and steamy exoplanet around which Hubble has discovered water vapor. (Image credit: NASA/ESA/Leah Hustak (STScI)/ Ralf Crawford (STScI))