Planet K2-18B is covered with an ocean and it is teeming with life. At least the experts suspect that. In no other way, astronomers from the University of Cambridge can explain the data that they obtained from the planet through the James Webb space telescope. What exactly did they see? Why is the discovery the most promising sign ever of life outside our solar system? And what do we already know about K2-18B? A portrait of the – probably – inhabited planet.

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