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potential planetsScience Mission Directorate | Science
•92% Informative
Astronomers using NASA 's Hubble Space Telescope observed the smallest exoplanet where water vapor has been detected in the atmosphere.
At only approximately twice Earth 's diameter, the planet GJ 9827d could be an example of potential planets with water-rich atmospheres elsewhere in our galaxy.
It remains too early to tell whether Hubble spectroscopically measured a small amount of water vapor in a puffy hydrogen-rich atmosphere.
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