ANSWERS: 3
  • The light that comes from all those stars needs a long time to travel. Light is very very fast, but the universe is soooo huge that even light needs up to millions of years to travel that far. So you are seeing the light photons that started their journey millions of years ago, the stars you're looking at could already have exploded by that time. There is no way to know if they're still there.
  • hmm well... it's like watching live television show - there's a delay before it gets to you - so you are watching whats happening a few seconds behind. now imagine that on a much larger scale.
  • Space is BIG ... even the light from the nearest star in our own galaxy takes about 4 years to get to us, and light from other galaxies takes even longer because the distance is even farther ... we can see the light from galaxies that are several billion light years away ... that means it takes billions of years for the light from those galaxies to travel from there to here ... Think of it like looking at an old photo album with pictures of your grandparents as children ... the picture WAS accurate at the time it was taken, but time has passed before you looked at the picture.

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