#comet impacts have long been suggested as a source of Earth’s water

Big Island telescope helps unlock clues to life on Earth found in comet’s water

New research using Atacama Large Millimeter/Submillimeter Array observations together with data from NASA Infrared Telescope Facility atop Mauna Kea show water in Halley-type comet 12P/Pons-Brooks matches that in Earth’s oceans, strengthening theory that comets helped make our planet habitable.