Hycean Worlds: A Possible New Frontier in the Search for Life Beyond Earth
The search for extraterrestrial life has conventionally been focused on Earth-like exoplanets -- terrestrial planets orbiting within the habitable zone of their host stars. This method is based on the premise that as life has risen in Earth’s conditions, somewhere with similar conditions could also give rise to life. As such, various exoplanet surveys over the years, including the Kepler and TESS satellites, have catalogued a few thousand Earth-like candidates for further investigation, finding that 1 in 5 Sun-like stars have an Earth-like planet in the habitable zone.
However, the candidate pool may have just expanded. In August this year, researchers at Cambridge’s Institute of Astronomy proposed a new hypothetical class of habitable exoplanets and dubbed them Hycean worlds, a ...










