An astonishing result that amazed the world of astronomy, the discovery that the expansion of the universe is increasing in speed is today recognized as a major contribution to science.
The dead satellite UARS has definitely fallen back to Earth, but we may never know exactly when and where, NASA officials said today. UARS most likely fell over the Pacific Ocean around midnight ET.
Using a measurement of the clustering of the galaxies surveyed, plus other information derived from observations of the early universe, researchers have measured the Hubble constant with an uncertainly of less than 5 percent. The new work draws on data from a survey of more than 125,000 galaxies.