VR Space Adventure is a free Android application developed by illusic that offers an immersive experience of the solar system in 360-degree virtual reality. The app allows you to explore the inside of each planet and learn about the universe in a fun and interactive way.

To enjoy the app, all you need is a smartphone and a Head Mount Display (HMD) VR device like Google Cardboard, VR Box, or Samsung Gear VR. Once you're set up, you can enter Mars and Mercury and explore their unique landscapes and features.

The app is designed specifically for planetarium education and offers a unique and engaging way to learn about our solar system. Although currently limited to Mars and Mercury, the developers promise to update the app with more planets and galaxies soon. Overall, VR Space Adventure is a great educational tool that combines technology and learning in an exciting way.