He wrote alternative what-if histories, explained difficult scientific theories with funny analogies, and leavened his lectures with jokes and humorous asides
The rhythms of activity in all biological organisms, both plants and animals, are closely linked to the gravitational tides created by the orbital mechanics of the Sun-Earth-Moon system, a study found
The waves were produced by the merger of black holes seven and 12 times the mass of the Sun and left behind a final black hole 18 times the mass of the Sun