Hubble Space Telescope scientific merit, did not duplicate proposals made by professionals, and required the unique capabilities of the space telescope. Thirteen amateur astronomers were awarded time on the telescope, with observations being carried out between 1990 and 1997. One such study was "Transition Comets—UV Search for OH". The very first proposal, "A Hubble Space Telescope Study of Posteclipse Brightening and Albedo Changes on Io", was published in "Icarus", a journal devoted to solar system studies. A second study from another group of amateurs was also published in "Icarus". After that time, however, budget reductions at STScI made the support of work by
Space Shuttle: A Journey into Space Orbit, Docking, Deorbit Burn, Reentry, and Landing, each with its own set of instructions to follow. The original Atari 2600 version came with an overlay since it made use of all the switches. In an April 1984 review for "Video Games" magazine, Dan Persons wrote: "Space Shuttle" is not a game for everybody. It requires a considerable amount of patience and, perhaps not too surprisingly, a considerable amount of brainpower. Players who seek the visceral thrills of the standard shoot'em-up may ultimately find this simulation's complexity frustrating. But those of you who are ready for a richer, more sophisticated experience