In its first year of science, the James Webb Space Telescope will examine the TRAPPIST-1 star system, revealed on this day 5 years ago. The TRAPPIST-1 system is made up of 7 Earth-size worlds, with at least 3 considered to be in the habitable zone — the distance from a star where it's not too cold or too hot to allow for liquid water on the surface of a planet. Learn more about what makes this system a “natural laboratory” for studying planet habitability in the latest video from NASA Astrobiolo

Meet TRAPPIST-1, an ultra-cool dwarf star almost twice as old as our sun, but less than 1% as bright. And seven Earth-sized planets are in its orbit that could have potential for supporting life… From the depths of black holes to mysterious alien worlds, journey into the darkest corners of the #Universe like never before. Discover more. 👉 https://fal.cn/3jiSE | BBC Earth