> The #DigitalUniverse may be viewed for free via two software applications.
OpenSpace blablabla...
#Partiview is an #opensource viewer from the National Center for Supercomputing Applications.
https://www.amnh.org/research/hayden-planetarium/digital-universe/download
> #Celestia — real-time #3D visualization of #space
The free space #simulation that lets you explore our universe in three dimensions.
Celestia runs on Windows, #Linux, macOS, iOS and Android.
https://celestiaproject.space/
> #ViewSpace is a #free, web-based collection of digital interactives and videos highlighting the latest developments in #astronomy and Earth #science.
https://viewspace.org/
> #Stellarium
It shows a #realistic sky in #3D, just like what you see with the naked eye, binoculars or a #telescope. It is being used in planetarium projectors. Just set your coordinates and go.
https://www.techspot.com/downloads/5768-stellarium.html