Hubble finds water vapor in small exoplanet's atmosphere – Phys.org

Hubble finds water vapor in small exoplanet's atmosphere – Phys.org

Astronomers using the NASA/ESA Hubble Space Telescope observed the smallest exoplanet where water vapor has been detected in its 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.

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