I built
OpenSpace 0.21.3 from source released 2 days ago.
What an amazing software to explore our universe, I've last time used it on Windows but not on Linux yet.
Didn't install it, just using binaries from source tree, which after build takes 34G of disk space, but this could me much less if installed and repo deleted.
It took time to build and then also a ton of space data had to be downloaded.
If you want to build it check also minimum
hardware requirements
Build instructions are here:
docs.openspaceproject.com
They also have
YT channel with videos and tutorials on how to use it.

Reactions: wizardfromoz and Rob