Planet smallest known planet is PSR B1257+12A, one of the first extrasolar planets discovered, which was found in 1992 in orbit around a pulsar. Its mass is roughly half that of the planet Mercury. The smallest known planet orbiting a main-sequence star other than the Sun is Kepler-37b, with a mass (and radius) slightly higher than that of the Moon. Every planet began its existence in an entirely fluid state; in early formation, the denser, heavier materials sank to the centre, leaving the lighter materials near the surface. Each therefore has a differentiated interior consisting of a dense planetary core surrounded
Voyage to the Planet of Prehistoric Women a small piece of it is mine", although in fact his adaptation of the "Planeta Bur" material had much more original material than the other, made by Curtis Harrington. His then-wife Polly Platt worked on the film as a production designer. In a retrospective on Soviet science fiction film, British director Alex Cox compared the movie to "Voyage to the Prehistoric Planet" and called "Voyage to the Planet of Prehistoric Women" "equally classic". Voyage to the Planet of Prehistoric Women Voyage to the Planet of Prehistoric Women is a 1968 American science fiction film, one of two which were adapted