Astronomy/distance to stars

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Question
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

Answer
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.

Astronomy

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Harry Hayfield

Expertise

Particular expert in eclipses (both solar and lunar), but able to answer most questions about astronomy or refer to a website that can help

Experience

Have been interested in eclipses since August 1999 and hope to see the annular eclipse in Scotland next year

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