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#1
July 22nd 16, 03:26 PM
posted to sci.astro.amateur
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Warped space-time
http://apod.nasa.gov/apod/astropix.html
Today's APOD Hubble image shows many warped galaxies that are supposedly much farther away than the foreground galaxy that is lensing them. My question is why are all those distant galaxies blue? Would they not be red due to their light being red-shifted? 
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