According to news on October 3, Roscosmos issued an announcement stating that,On August 19, when the "Chun-25" probe's propulsion system switched from a near-lunar circular orbit to a landing elliptical orbit, the engine ignited and ran for 127 seconds instead of the planned 84 seconds. As a result, the space station entered an unintended orbit and collided with the lunar surface.
According to the investigation,The most likely cause of the accident is that a large number of instructions were sent simultaneously, causing the accelerometer of the angular velocity measurement unit to fail to turn on, which ultimately caused the airborne integrated control system to operate abnormally.
The report stated that the distribution of instructions with different priorities was somewhat random. The failure of the accelerometer to send out a signal caused the onboard control system to be unable to shut down the propulsion system in time when the detector reached the predetermined speed. Instead, it shut down the thruster after it had run for the specified time.
It is worth mentioning that last month,India's "Chandrayaan-3" made history by becoming the world's first probe to land near the moon's south pole.
However, according to the plan, India's lunar rover and lander will "wake up" after nearly a month of nap. But until now, "Chandrayaan-3" has not woken up.