News of the WeekAmerican Astronomical Society 214th Meeting, 7–11 June 2009, Pasadena, California

Star Studies Yield Better Yardsticks

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Science  19 Jun 2009:
Vol. 324, Issue 5934, pp. 1503
DOI: 10.1126/science.324_1503b

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Measuring cosmic distances is a tricky business. At the American Astronomical Society meeting, researchers presented findings that could make the job easier and lead to better estimates of the Hubble constant, which gauges how quickly the universe is flying apart.