The Man Who Sold the Moon Moses must have looked, when he gazed out over the promised land." The Man Who Sold the Moon is also the title of two collections of Heinlein's short stories. Both collections include "Let There Be Light", "The Roads Must Roll", and "Requiem"; the first also includes "Life-Line" and "Blowups Happen". Although the science fiction film "Destination Moon" is generally described as being based on Heinlein's novel "Rocket Ship Galileo", the story in fact bears a much closer resemblance to "The Man Who Sold the Moon". However, the technology of "The Man Who Sold the Moon" is very different: its rocket
Optical telescope the specifications of the telescope, however they alter the way the telescopes properties function, typically magnification, apparent field of view and FOV. The smallest resolvable surface area of an object, as seen through an optical telescope, is the limited physical area that can be resolved. It is analogous to angular resolution, but differs in definition: instead of separation ability between point-light sources it refers to the physical area that can be resolved. A familiar way to express the characteristic is the resolvable ability of features such as Moon craters or Sun spots. Expression using the formula is given by the