- Chinese space firm Tianbing Aerospace Technology said it accidentally launched a rocket it was testing.
- The Tianlong-3 is designed as a rival to SpaceX's Falcon 9, with a similar takeoff mass and reflight.
- But a stationary engine test on Sunday saw the rocket lift off and crash into a mountain.
A Chinese space firm said on Sunday that it accidentally launched its Tianlong-3 rocket during a test, causing the vehicle to lift off and crash into a nearby mountainside.