Scientists have determined a significant portion of the water in our solar system, including the water on Earth, predates our solar system and probably came from interstellar space. And that's good news for the search for life on other planets.
Our solar system formed from a proto-planetary disc of swirling gas and other matter that encircled our sun. This mass probably had interstellar ice in it from the start, a team including the Carnegie Institution's Conel Alexander and L. Ilsedore...
