33 years ago today, on October 22, 1992 (September 27, 1992 lunar calendar), an Australian rocket exploded during launch. On October 22, 1992, an Australian rocket exploded during launch from the Woomera launch site in South Australia. The rocket, named "Ausrock 2", was developed by several Australian universities four years ago at a cost of 1 million Australian dollars. It is the largest liquid fuel rocket designed, manufactured and launched by Australia. When the rocket ignited, the high-pressure fuel tank on the rocket exploded and caught fire. According to preliminary analysis, the cause of the explosion was a ball valve frozen by liquid oxygen, causing a series of failures in the ignition system.