ARIEL
expected 2031
expected 2031
—hype
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About this moment
ARIEL is expected 2031. The exact day has not been announced yet.
Spacecraft launch, with the target date from Wikidata.
Ariel is a planned space telescope and the fourth medium-class mission of the European Space Agency's Cosmic Vision programme. The mission is aimed at observing at least 1,000 known exoplanets using the transit method, studying and characterising the planets' chemical composition and thermal structures. Compared to the James Webb Space Telescope, Ariel will be a much smaller telescope with more observing time available for planet characterisation. Ariel was expected to be launched in 2029 aboard an Arianespace Ariane 6 together with the Comet Interceptor into the Sun-Earth Lagrange point L2. However as of January 2026, it is likely to be delayed until 2031.
Summary from Wikipedia (CC BY-SA 4.0)
This listing uses an approximate period. An exact day has not been confirmed.
- Where
- Worldwide
Date source
Source last checked Oct 19, 2026
Sources and attributionsThis is a public listing. If the date or details look wrong, tell us.
