Experiencing space previously developed "The Planets VR" for Android. This challenge was to develope a WebVR app of the solar system from scratch using preprepared image mosaics prepared by the USGS Astrogeology Research Program. This covers all the planets and major moons but is limited to a number of landing sites.
The code is available at https://github.com/experiencing-space/Planets-VR
A demo is available at https://experiencing.space/vr/nasa
The nest steps will be to add motion control and then exoplanets based on the latest data.
The solar system is not the limit.
SpaceApps is a NASA incubator innovation program.