"New Hubble Constant Measurement Adds to Mystery of Universe's Expansion Rate", hubblesite.org
University of Chicago scientists have made a new measurement of how fast the universe is expanding - using an entirely different kind of star than previous endeavors. "The red giant method is independent of the Cepheids and is incredibly precise. The stars used are of lower mass, have different evolutionary histories and are located in different regions of distant galaxies," said Taylor Hoyt
, a University of Chicago graduate student who is a Brinson Carnegie Fellow and co-author on the paper.