Describe the Ariel space telescope
The Ariel space telescope, which will study the atmospheres of distant worlds, has the green light to proceed.
European Space Agency (Esa) member states formally adopted the project on Thursday, signing off two years of feasibility studies. The near-billion-euro observatory is now clear to launch in 2029.
Ariel will probe the gases that shroud exoplanets to try to understand how these objects formed and how they have evolved through time. The findings are expected to help put the nature of our own Solar System in some wider context.