American Astronomical Society 214th Meeting, 7-11 June 2009, Pasadena, California:
Star Studies Yield Better Yardsticks
Yudhijit Bhattacharjee
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.