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How many galaxies could we reach traveling at 0.5c, 0.8c, and 0.99c?

by Ruby1 min read8th May 2019No comments


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The expansion of the universe means that even travelling at the speed of light, over time an increasing number of galaxies will be beyond our reach, hence the concept of "reachable universe." Right now, how many galaxies could we potentially reach if we travelled at significant fractions of the speed of light? And how quickly are these galaxies moving beyond our reach?

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