AstroGrav Astronomy Software is the publisher of the AstroGrav software package for Windows and Mac that allows you to simulate and view how astronomical objects move and interact under the force of gravity. It features superb interactive 3D visualizations that allow you to move around within an astronomical system, while watching how it evolves with the passage of time. There are also comprehensive editing facilities, and the software comes complete with a wide variety of sample simulations. The software is ideal for astronomers, teachers, educationalists, and students.