Above is the entire series of Dirty Harry book covers, nicely capturing Clint Eastwood’s famous don’t-fuck-with-me glint. The series, which is known collectively as The Further Adventures of Harry Callahan, was authored from 1981 to 1983 by several people using the psuedonym Dane Hartman.
1959—Dark Side of Moon Revealed
The Soviet space probe Luna 3 transmits the first photographs of the far side of the moon. The photos generate great interest, and scientists are surprised to see mountainous terrain, very different from the near side, and only two seas, which the Soviets name Mare Moscovrae (Sea of Moscow) and Mare Desiderii (Sea of Desire).