Astronomy/distance to stars
I read this in a discussion group today, and wondered if there was any truth to the statement?
some astronomers feel that it is possible that the entire universe could fit into an area within a 200 light-year radius from the earth! Therefore, there is no guarantee that the actual distances in space are as great as we have been told, and light from the farthest point in the universe could have reached us in only a few hundred years
A light year is the amount of distance that light travels in a year, therefore based on those assessments the furthest things we can see are only 200 years old. However, as the Crab Nebula (which flared into life in 1054 AD) is seen today, that statement can simply not be true.