Saturday, March 15, 2014

Frontier fields

A telescope bigger than a galaxy
March 11, 2014

Abell 2744 cluster (credit: STScI) Astronomers have announced a view of the universe though a lens more than 500,000 light years wide, as part of a program called “Frontier Fields” to search for the first galaxies. The “lens” is actually a massive cluster of galaxies known as Abell 2744. As predicted by Einstein’s Theory of General Relativity, the mass of … more…

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