NASA’s Hubble Finds Water Vapor in Small Exoplanet’s Atmosphere

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. “This would be the first time that we can directly show through […]