The software lies within Theming Tools, more precisely Screensavers. The current setup file available for download occupies 1.4 MB on disk. Our antivirus analysis shows that this Mac download is malware free.
From the developer:
TriVectus Planets is a screen saver that displays and animates various planetary systems. In addition, you'll see exploding planets, asteroid swarms, rouge asteroids, and nuclear war, among other things. Watch a planet's moon spiral into space after the planet explodes, or see how a rouge asteroid wrecks havoc with its gravitational field as it passes through the system.
You may want to check out more Mac applications, such as Fishing Planet, Planets -- Live Wallpaper or ConverTable Planets, which might be similar to TriVectus Planets.