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Oct 24, 2019

A crisis in cosmology: New data suggests the universe expanding more rapidly than believed

Posted by in category: cosmology

A group of astronomers led by University of California, Davis has obtained new data that suggest the universe is expanding more rapidly than predicted.

The study comes on the heels of a hot debate over just how fast the universe is ballooning; measurements thus far are in disagreement.

The team’s new measurement of the Hubble Constant, or the expansion rate of the universe, involved a different method. They used NASA’s Hubble Space Telescope (HST) in combination with W. M. Keck Observatory’s Adaptive Optics (AO) system to observe three gravitationally-lensed systems. This is the first time ground-based AO technology has been used to obtain the Hubble Constant.

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