New observations fail to confirm signs of life in the atmosphere of the distant planet K2-18b. They also raise questions about what it will take to detect biology light-years away.
New observations fail to confirm signs of life in the atmosphere of the distant planet K2-18b. They also raise questions about what it will take to detect biology light-years away.
An artist’s impression of the exoplanet K2-18b. A new study confirms that it is a water-rich world but raises doubts about earlier suggestions that it harbors life.