Gravity (software)

{{about|the planetary motion simulator|other software|Gravity (disambiguation)}}

{{Notability|Products|date=November 2018}}

{{Infobox software

|name = Gravity

|author = Steve Safarik

|latest release version = 2.01

|latest release date = {{Start date and age|1990|05|27}}

|operating system = MS-DOS

|size = 87.5 KB

|language = English

|discontinued = yes

|genre = Shareware

}}

Gravity is a software program designed by Steve Safarik{{cite web|url=http://www.emsps.com/lists/sciengp.htm|title=Science and Engineering Tools and Their Producers|year=1997|publisher=EMS Professional Shareware|accessdate=2 October 2010}} to simulate the motions of planetary bodies in space. Users can create solar systems of up to 16 bodies. Mass, density, initial position, and initial velocity can be varied by user input. The bodies are then plotted as they move according to the Newtonian law of gravitation. Simulation settings may be saved as files with the extension "{{Mono|.GRV}}".