redshift Published July 26, 2018 at 594 × 615 in Red Light Is Green Light For Einstein’s Theory --- By NASA/CXC/M.Weiss – http://chandra.harvard.edu/photo/2001/blackholes/ (image link), Public Domain, https://commons.wikimedia.org/w/index.php?curid=40060179 --- Sharing is Caring:FacebookTwitterEmailMorePinterestMastodon