Wendy L. Freedman
Published 2017-06-08Version 1
We are at an interesting juncture in cosmology. With new methods and technology, the accuracy in measurement of the Hubble constant has vastly improved, but a recent tension has arisen that is either signaling new physics or as-yet unrecognized uncertainties.
Comments: Invited commentary for Nature Astronomy; 10 pages, 2 figures
Journal: Nature Astronomy, 1, 0169 (2017)
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