Just want to take a break from the usual stuff to talk about how amazing stars are. When we look at stars we get to look into the past. Due to the way and speed light travels(186,282 mps) in, we see stars as they once were. It takes light, from the closest star to us, to travel to Earth in about eight minutes. When Earth based telescopes look at the sun, they are seeing it as it was eight minutes ago. Using Earth based telescopes and advancing technology we can see stars that no longer exist.
There are stars out there that are more than thousands, millions or billions of of light years away. So, if a star is a million light years away and died a million years ago, we will see it die now. If another star died four million years ago, but is a hundred million light years away, we’ll still be able to see it for another 96 million years.