SLAC: Astronomically Large Lenses Measure the Universe

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SLAC: Astronomically Large Lenses Measure the Universe

Post by bystander » Mon Mar 01, 2010 6:45 pm

Astronomically Large Lenses Measure the Age and Size of the Universe
SLAC National Accelerator Laboratory - 2010 Mar 01
Using entire galaxies as lenses to look at other galaxies, researchers have a newly precise way to measure the size and age of the universe and how rapidly it is expanding, on a par with other techniques. The measurement determines a value for the Hubble constant, which indicates the size of the universe, and confirms the age of the universe as 13.75 billion years old, within 170 million years. The results also confirm the strength of dark energy, responsible for accelerating the expansion of the universe.
S. H. Suyu et al 2010 ApJ 711 201-221 doi: 10.1088/0004-637X/711/1/201

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