The first option is Alpha 13 - (Beta programlarina katilma)
I was saying that you could try the previous stable version 12.1, if you're unable to use 13. Until we are able to find a solution for the problem.
As Lord DC said, you can also open up a simple simulation like Earth and moon, and delete both bodies, as a workaround to getting a blank simulation.
To everyone having this issue, we really need the crash dump files.
You can find them in the locations listed below.
On Windows, the crash dump files are located in the installation folder for Universe Sandbox ². They are typically in folders named with the data the crash occurred. If you see any of these folders, we need the entire contents, there should be advanced log files as well as a .dmp crashdump file.
On a Mac, these files will be located in ~/Library/Logs/DiagnosticReports.
If you need help finding your installation directory, Steam provides a useful shortcut.
If you right click on the Game in your Steam Library, select Properties, and then go to the Local Files tab. Then click "Browse Local files" this will open up the file explorer at the correct location for you.