Vulcan (hypothetical planet) Vulcan (hypothetical planet) Vulcan is a small hypothetical planet that was proposed to exist in an orbit between Mercury and the Sun. Attempting to explain peculiarities of Mercury's orbit, the 19th-century French mathematician Urbain Le Verrier hypothesized that they were the result of another planet, which he named "Vulcan". A number of reputable investigators became involved in the search for Vulcan, and despite occasional claimed observations, no such planet was ever confirmed. Peculiarities in Mercury's orbit have now been explained by Albert Einstein's theory of general relativity. Searches of data gathered by NASA's two "STEREO" spacecraft have failed to find
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