Astronomers use split images of quasars to produce a new estimate of the Hubble constant

On: January 22, 2019

Astronomers use split images of quasars to produce a new estimate of the Hubble constant
The question of how quickly the universe is expanding has been bugging astronomers for almost a century. Different studies keep coming up with different answers—which has some researchers wondering if they’ve overlooked a key mechanism in the machinery that drives the cosmos.
phys.org
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