... Following a series of failures, the Soviet probe touched down in the Moon's Oceanus Procellarum region February 3, 1966. ... But he went home from Cambridge one summer in 1665, thought a lot about the physical nature of the world, and came back two years later with a revolutionary understanding of mathematics, gravitation, and optics. ... Rivers in the Sun . ... These fleeting events are only visible to those in the path of the Moon's shadow as it races across the Earth. ... Is this one galaxy or...