Alien life could thrive on big ‘Hycean’ exoplanets By Mike Wall about 22 hours ago Hycean planets are up to 2.5 times bigger than Earth, with oceans and hydrogen-rich atmospheres. (Image credit: Amanda Smith, Nikku Madhusudhan ) The search for alien life should broaden its horizons a bit, a new study suggests Alien hunters have to date focusedContinue reading “Alien life could thrive on big ‘Hycean’ exoplanets | Live Science”