The universe is expanding — and it is doing so at the same rate in all directions, according to new measurements that appear to confirm the standard model of cosmology. Astrophysicist Jeremy Darling of the University of Colorado Boulder came to this conclusion after employing a research strategy known as "real-time cosmology," which seeks out the tiny changes in the universe that occur over human timescales. The idea of "real-time cosmology" was proposed in two separate papers by Alan Sandage in 1962 and by Harvard astrophysicist Avi Loebin 1998. Scientists don't know much about dark energy, except that it may be a property of the vacuum.
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