Mercury (planet) diagram on the right illustrates the effects of the eccentricity, showing Mercury's orbit overlaid with a circular orbit having the same semi-major axis. Mercury's higher velocity when it is near perihelion is clear from the greater distance it covers in each 5-day interval. In the diagram the varying distance of Mercury to the Sun is represented by the size of the planet, which is inversely proportional to Mercury's distance from the Sun. This varying distance to the Sun leads to Mercury's surface being flexed by tidal bulges raised by the Sun that are about 17 times stronger than the Moon's
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