Think about it: When you stare at the night sky, you see the stars as they looked in the past. You see the nearest stars as they looked over 4 years ago. You see the brightest star as it looked 8.5 years ago. You see the farthest star from earth in our own galaxy as it looked 11,730 years ago. You see the stars of the Andromeda Galaxy as they looked 2.5 million years ago. Even the sun you see as it looked 8 minutes ago. Most of the photons of star light hitting your eyes as you stand outside at night began their journey across space long before you were born, before your ancestors were born, before recorded history, before humans existed, and even far beyond that.