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Redshifted light from distant galaxies

As light travels through our expanding universe, it is stretched into longer wavelengths, meaning that it is moving along the spectrum of light to appear more red. This is known as "redshift." (Credits: Canadian Space Agency, STScI)

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File size: 0.16 MB
Image size: 2152 x 1079 pixels
Resolution: 72 dpi


Image date: September 20, 2019

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