Topic: our understanding of the composition of the early Universe may not be accurate (Read 100 times)

marilyn.monroe · « **on:** June 27, 2012, 02:18:35 PM »

NASA scientists working with the Hubble Space Telescope have discovered an arc of light behind an extremely massive cluster of galaxies about 10 billion light-years away. Given that the clusters formed over 13.7 billion years ago at a time when the Universe was very young, there shouldn't really be anything "behind" it. But there is.

http://io9.com/5921703/nasa-finds-a-galactic-arc-in-deep-space-that-has-no-business-being-there

marilyn.monroe · « **Reply #1 on:** June 27, 2012, 02:24:57 PM »

"At that early epoch, the expectation is that there are not enough galaxies behind the cluster bright enough to be seen, even if they were 'lensed' or distorted by the cluster."

How can they really accurately measure light when there are so many unknowns?

Author Topic: our understanding of the composition of the early Universe may not be accurate (Read 100 times)

marilyn.monroe

our understanding of the composition of the early Universe may not be accurate

marilyn.monroe

Re: our understanding of the composition of the early Universe may not be accurate