Original sentence: 14 spacecraft models ranging from a compact manned maneuvering unit (Shuttle's MMU) to an interplanetary passenger transport (Galactic Explorer) and a giant interstellar freighter (Zander Freighter),.Destinations including space stations (both almost-historical e.It does not take account of time dilation.It is one of the first general-purpose space flight simulators and it incorporated concepts from astrodynamics and celestial mechanics.Observatory mode that can be used as a planetarium for viewing stars and other celestial bodies.Spacecraft instrument panel providing altitude and velocity information,.Video recording and screenshots
Edited sentence: Although as a space flight simulator it required from their users knowledge of some hard-to-grasp concepts of astrodynamics and celestial mechanics Space Simulator proved to be remarkably easy to handle even for inexperienced (but sufficiently determined) users.It does not take account of time dilation though.It is one of the first general-purpose space flight simulators (and arguably the best until the arrival of  Orbiter) and catered to armchair astronauts, space flight enthusiasts and sci-fi fans alike.It should be noted that this was the only space flight simulator that allowed for an interstellar journey.Observatory mode that can be used as a planetarium for viewing stars and other celestial bodies,.Photograph and video recording.Space Simulator could often be frustrating, complex and difficult due to its realism, but it could be rewarding for the skilled flightsimmer at the same time.Spacecraft instrument panel standardized, common to all spacecraft panel providing altitude and velocity information,.Wide number of destinations including space stations (both almost-historical e.Wide number of spacecraft 14 spacecraft ranging from a compact manned maneuvering unit (Shuttle's MMU) to an interplanetary passenger transport (Galactic Explorer) and a giant interstellar freighter (Zander Freighter),