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
The Message to the Planet is a great novel, a merely interesting one, or an unclassifiable pandemonium". Another reviewer remarked that anyone "seeking an untroubled read and pat answers should seek them elsewhere". In his study of Iris Murdoch's fiction, Peter Conradi wrote that "The Message to the Planet" was a "lesser" novel, inferior to its predecessor "The Philosopher's Pupil", but with some memorable scenes. On the other hand, Suguna Ramanathan calls it "an extraordinary achievement" and "of all her 24 novels, the largest in scope and most powerful in thrust". The Message to the Planet The Message to the Planet is a novel by