Elaborate experiments in the coming years will test a theory worked out over a century ago by a man with pencil and paper.
William Horace Smith/Corbis
Physicists are pushing Einstein's theories to their limits, hoping to connect gravity with the rest of physics.
Courtesy of the Otis Historical Archives at the National Museum of Health and Medicine
the Otis Historical Archives at the National Museum of Health and Medicine
For decades people have probed Einstein's brain for clues to his genius. Some say it's time to give it a rest.
Albert Einstein single-handedly changed the universe 100 years ago. For centuries, Isaac Newton’s straightforward equations ruled the cosmos — or at least how physicists thought about it. Any object with mass exerted an attractive force on any other object with mass; the bigger the masses, and the closer the two objects, the stronger the attraction. Simple. But in 1915, Einstein ...
