For the first time, an atmosphere has been detected on a planet outside the Solar System.
Astronomers have found the planet GJ 1132b - just 39 light years away - has a thick, hot atmosphere full of methane and possibly water vapour. An atmosphere is an essential requirement for life on any planet. This discovery shows that Earth-like conditions might be more common than we thought.
I'm excited about what else we can discover about planets like this. I hope what we learn from them eventually helps us find alien life.