The temple was destroyed when the planet Ossus was devastated by the Cron Supernova in 3996 BBY, during the Great Sith War. Centuries later, during the third Galactic War between the Galactic Republic and the Sith Empire, the Sith invaded Ossus. During the invasion, the Sith Lord Darth Malora unleashed her Mutated Geonosians against the Jedi. Eventually, the Geonosians settled in the ruins of the Ossus Jedi Temple and the Geonosian queen established her hive in the caves beneath the temple.
- Jedi vs. Sith: The Essential Guide to the Force
- The Complete Star Wars Encyclopedia