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Name: Vince
Status: other
Grade: 12+
Location: AZ
Country: USA
Date: N/A


Question:
Due to the speed of light and the range of the visible universe, do any galaxies at the edge of the visible universe appear as incomplete galaxies because the light from the invisible parts have not yet reached us?



Replies:
No. When we look far away in space, we also look far back in time. The farthest back we are currently able to "see" (2010) is to the time of recombination, several hundred thousand years after the big bang. (These signals are the cosmic microwave background.) Galaxies had not formed by that time.

Richard E. Barrans Jr., Ph.D., M.Ed.
Department of Physics and Astronomy
University of Wyoming



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