First atmosphere detected on a rocky planet in the habitable zone of a nearby star

Astronomers using the Magellan Clay telescope have detected helium escaping from LHS 1140 b, a rocky super-Earth 48 light-years away in the habitable zone of a red dwarf. Published in Science, the result is the first direct atmospheric detection on a rocky exoplanet in a habitable zone, and it implies the atmosphere is being replenished from the planet's interior.