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ScienceCasts - Hubble’s Contentious Constant - HD

M

Michael500ca

2 Views • Sep 24, 2017

Description

There are two leading ways to measure the universe's rate of expansion, and for fifteen years, they more or less agreed with one another. Not anymore, and that’s a big deal.

Visit http://science.nasa.gov/ for more.

Credit: NASA

Keywords & Tags

#Cosmology #hubble #constant #expanding #universe #red #shift #microwave #background #space

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