A jet emanating from galaxy M87 can be seen in this July 6, 2000, photo taken by the Hubble Space Telescope. J.A. Biretta, Hubble Heritage Team/NASA hide caption
Albert Einstein Albert Einstein
Mathematical physicist Albert Einstein delivers one of his recorded lectures in 1955. Keystone/Getty Images hide caption
Lasers and mirrors are used to carefully measure shifts in space-time. To avoid contamination, protective clothing must be worn at all times. LIGO Lab/Caltech/MIT hide caption
Albert Einstein once wrote that he was indebted to a favorite uncle for giving him a toy steam engine when he was a boy, launching a lifelong interest in science. AP hide caption
An image from a simulation of two black holes merging. Courtesy of SXS Collaboration hide caption
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