How far back are we looking in time?

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Date: 2015-03-19 04:48:58 Spiral galaxies Light Edwin Hubble Quasar Radio astronomy Milky Way Speed of light Proxima Centauri Observable universe Astronomy Space Local Group		How far back are we looking in time? Add to Reading List Source URL: phys.org Download Document from Source Website File Size: 94,18 KB Share Document on Facebook

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