comment: >
  
  If you rode a spaceship a light speed for 100 years. Wouldn't you age 100 years?
  E: If you were then to look back at earth. It would appear as if nothing had changed at all.
context: 100 light years away. 
  So if we were on that planet and looking at earth with a super powerful telescope, we’d be looking at the roaring 20s. I think. Science is hard. >
  
  And if we then got on a spaceship that travels at the speed of light and set out to go check out Earth, we wouldn’t show up until 200 years after the events witnessed through the telescope. >
  
  But when we arrive we wouldn't have significantly aged at all.