SpaceEngine is an interactive 3D planetarium and astronomy software[2] initially developed by Russian astronomer and programmer Vladimir Romanyuk.

[3] Development is now continued by Cosmographic Software, an American company founded by Romanyuk and the SpaceEngine Team in February 2022, based in Connecticut.

SpaceEngine creates a 1:1 scale three-dimensional planetarium representing the entire observable universe, combining real astronomical data with scientifically accurate procedural generation algorithms.

Properties of objects, such as temperature, mass, radius, and spectrum, are presented on the HUD and in an accessible information window.

Users can observe a wide range of celestial objects, from small asteroids and moons to large galaxy clusters, similar to other simulators like Celestia, OpenSpace, Gaia Sky, and Nightshade NG.

In the case of planets and moons, specific environmental types, surface temperatures, and pressures can be used to filter through the vast amount of different procedurally generated worlds.

The software has its own built-in "wiki" database which gives detailed information on all celestial objects and enables a player to create custom names and descriptions for them.

[9] On May 27, 2019, the Steam store page for SpaceEngine was made public in preparation for the release of the first paid version, 0.990 beta.