How Can We See Galaxies Travelling Away Faster Than Light? So astronomers measure a galaxy’s redshift from its spectrum, use the Hubble constant plus a model of the universe to turn the redshift into a distance, and use the distance and the constant speed of light to infer how far back in time they are
How Can Galaxies Travel Faster Than The Speed Of Light? The expansion of the universe causes distant galaxies to recede from us faster than the speed of light, if proper distance and cosmological time are used to calculate the speeds of these galaxies. Are galaxies moving away from each other faster than the speed of
How Can Galaxies Travel Faster Than Light? The expansion of the universe causes distant galaxies to recede from us faster than the speed of light, if proper distance and cosmological time are used to calculate the speeds of these galaxies. Can a galaxy travel faster than light? The rate of universal expansion is 68 kilometers