As a somewhat partial astrophysicist, remembering the increasing scarcity of helium on Earth is always amusing. It's the second most abundant element in the uni

As a somewhat partial astrophysicist, remembering the increasing scarcity of helium on Earth is always amusing. It's the second most abundant element in the universe, after all. It's just that when you are near a star, light elements are easily heated and move away quickly towards the oort cloud and interstellar space.