News: 12.4.2018: Version 0.3 of Low Earth Orbit Targeting is released, allowing to simulate 3rd body perturbations - also see the tutorial series on its usage. 4.4.2018: Our second movie teaser is out - see it on the movie page! For regular updates on the movie project, we also now have a newsletter you can subscribe to. 28.2.2018: Watch a first teaser for the movie from our movie page! 17.2.2018: Read about our new project of producing a fantasy movie! 13.1.2018: Version 0.2 of Low Earth Orbit Targeting is released - also see the tutorial series on its usage. 19.12.2017: Introducing Low Earth Orbit Targeting - a free software package to numerically analyze orbits and plan maneuvers (including a tutorial series) - see the science section. 16.12.2017: Both versions of the Flightgear Space Shuttle Manual have been updated to meet milestone 9 of the development - find the latest in the bookstore