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Last updated on April 16, 2014 at 17:34 EDT

Gravitational Lens System

January 6, 2014

This movie illustrates the components of a gravitational lens system (a kind of natural telescope formed when a rare cosmic alignment allows the gravity of a massive object to bend and amplify light from a more distant source) known as B0218+357. Different sight lines to a background blazar result in two images that show outbursts at slightly different times. NASA’s Fermi Gamma-ray Space Telescope made the first gamma-ray measurements of this delay in a lens system.

Credit: NASA

[ Read the Article: NASA Conducts First Ever Gamma-Ray Study Of A Gravitational Lens ]