Some of the strange mathematical properties of black holes, coming from Karl Schwarzschild's first solution of the Einstein field equations of general relativity in 1915, still puzzle the scientists. (sciencedaily.com)
Now known as the Einstein field equations, and published in 1916, they supplanted Newton's law of universal gravitation and are still used today, nearly a century later. (newscientist.com)
But even though it's a little different than solving field equations in physics, it's an extremely satisfying career, says Handa. (sciencemag.org)