Why haven’t we found extraterrestrial life? Maybe it’s hiding under layers of rock and ice

Water worlds are found in our own solar system, and life may hide among their layers of rock and ice, new studies suggest. Life may, one day, be found on worlds including Europa, Enceladus, Titan, Mars, and possibly even (Pluto). Interior water ocean worlds (IWOWs) are common in our solar system, and similar planets and moons are likely to exist in other planetary systems, greatly expanding the possibility of alien life. “As we now know, in our solar system, Earth is an uncommon type of water ocean world because its oceans are on its exterior. In contrast, an increasing number…

This story continues at The Next Web