For over a century, quantum mechanics and Einstein’s general relativity have stood as the cornerstones of modern physics, yet ...

Einstein’s general theory of relativity can be summed up ... That explains why we feel a downwards pull towards Earth and why Earth orbits the sun. Although gravity is dominant over large ...

Time moves just a tad faster on the Moon, where gravity is one-sixth that of Earth ... theory of general relativity, one of the best tested theories that we have that explains the fabric of ...