Showing posts with label stars. Show all posts
Showing posts with label stars. Show all posts

Tuesday, July 1, 2008

Distant stars

We are sometimes amazed that we are seeing the distant past when we look at distant stars. But just about always when we look around, we see the past--light takes time to come to us from the objects. Why is it more amazing when we see the more distant past? And anyway, isn't the measure of temporal distance relative to reference frame?.