So any space travelers look at a map that has an X on it and says, 'You are here'. The sizes, the distances, the time involved is beyond any human reference. The universe is about 13.7 billion years old, our star is about 5 billion years old. All elements heavier than iron are only produced in a supernova so all the gold, platinum, and other heavy elements on Earth could only have been formed in a star that exploded over 5 billion years ago. The dust from that and other exploding stars coalesced into other stars and solar systems around them like our solar system. All life is truly made of star dust.
