Three teams of astronomers have been fascinated by an alien world known as K2-18b, which is 110 light-years away, in the constellation Leo. But what’s all the fuss about?
In September, two teams announced that they had found signs of liquid water in the planet’s atmosphere — a landmark discovery in the search for potentially habitable alien worlds. But the mere presence of water isn’t the only condition necessary for life. Other conditions, like temperature and pressure, can also affect a planet’s habitability. Now, a third team reports that the pressures of liquid water on the same world may be good for life to evolve — another intriguing development for scientists.