advancedsolars-1.0.4.jar is a release file of the Minecraft mod Advanced Solars Classic, made for Minecraft 1.12.2. It was published on September 23, 2019 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the Advanced Solars Classic mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.