BSR says... Please show your math. I'll wait. StukaFox said: It's fairly amazing how short the Stelliferous Era (the time period in which stars exist) is during the entire birth-to-death of the universe. It's roughly 10^6 - 10^14 years (one million to 100 trillion years from the Big Bang to stellar death, or a span of one million million x 8 years). This seems like a very long time, but on the universal time scale, it's not. "Matter" in the universe will exist for ~10^~125 years, or ten unquadragintillion (yes, that's a real word) This is the equivalent (if I'm doing the math right) of the total life of the universe being a length of one mile, the entire age in which stars exist is the width of a playing card approximately one millimeter from the start. For comparison, the atomic decay of Xenon-124 into Tellurium-124 is about 18 sextillion years (1.8 x 10^22 years), roughly 1 trillion times the current age of the universe.