Atmospheric Remote sensing Infrared Exoplanet Large survey mission (ARIEL) is an ESA telescope. During its 4-year mission, ARIEL will observe 1000 planets orbiting distant stars and make the first large-scale survey of the chemistry of exoplanet atmospheres. For a selected number of exoplanets, ARIEL will also perform a deep survey of their cloud systems and study seasonal and daily atmospheric variations. December 31, 2031 at 00:00 UTC · To Be Determined Ariane 62 — Arianespace, to Sun-Earth L2 Ariane Launch Area 4, Guiana Space Centre, French Guiana Data: Launch Library 2, The Space Devs. Mission patch: via The Space Devs.