Starbursting Dwarf Galaxy

October 18, 2013 2:26 AM

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Astronomers have discovered the most distant gravitational lens yet, a galaxy that deflects and intensifies the light of an even more distant object. The finding has now provided the scientists with a rare opportunity to directly measure the mass of a distant galaxy and reveals that these lenses may not be as uncommon as once believed.

Light is affected by gravity. This means that light passing through a distant galaxy will be deflected. Called gravitational lenses, these distant galaxies can provide tests of Einstein's theory of general relativity and act as valuable tools. Gravitational lenses actually consist of two objects: on...

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