An artist's illustration depicts exoplanet GJ 9827d (foreground, right) — the smallest exoplanet where atmospheric water vapor has been detected — as it orbits a host star. Two inner planets (bottom left) in the system are also shown.
Mandatory Credit: NASA/ESA/Leah Hustak (STScI)/Ralf Crawford (STScI)
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Astronomers search for water in space - make unprecedented discovery
Astronomers using the Hubble Space Telescope have detected water molecules in the atmosphere of a small, blazing-hot exoplanet 97 light-years from Earth.

