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Extrasolar Planets: April 2021


Ariel, the Atmospheric Remote-sensing Infrared Exoplanet Large-survey, was adopted as the fourth medium-class mission in ESA's Cosmic Vision programme to be launched in 2029.

The atmospheres of gaseous giant exoplanets orbiting close to their parent stars (hot Jupiters) have been probed for nearly two decades.

What is habitability? Can we quantify it? What do we mean under the term habitable or potentially habitable planet?