Mercury (planet) three weeks, the Sun is almost stationary overhead, and is at its most brilliant because Mercury is at perihelion, its closest to the Sun. This prolonged exposure to the Sun at its brightest makes these two points the hottest places on Mercury. Conversely, there are two other points on the equator, 90 degrees of longitude apart from the first ones, where the Sun passes overhead only when the planet is at aphelion in alternate years, when the apparent motion of the Sun in Mercury's sky is relatively rapid. These points, which are the ones on the equator where the apparent
The Message to the Planet The Message to the Planet The Message to the Planet is a novel by Iris Murdoch. Published in 1989, it was her twenty-fourth novel. "The Message to the Planet" centres on Marcus Vallar, a charismatic former mathematician and painter who has abandoned both these pursuits, and on a group of London friends, former associates of Vallar, with whom he has broken off contact. The plot begins with the decision of Alfred Ludens, a young history professor, to seek out his former mentor Vallar in the hope that he can restore his friend Patrick Fenman to health. Fenman is apparently dying