What a weird article. It says nobody knows where deuterium comes from ("One idea is that much of the heavy water formed in the interstellar cloud and then trave

What a weird article. It says nobody knows where deuterium comes from ("One idea is that much of the heavy water formed in the interstellar cloud and then traveled across the solar system."), and abruptly ends. They could've at least tried exploring or explaining the subject a little - right now it reads like half an abstract.