Chang'e orbits the moon

The Chang'e lunar mission is an important part of China's lunar exploration project. After entering lunar orbit, the probe performs scientific exploration of the terrain, geology, and lunar soil on the lunar surface, while verifying key technologies such as orbit design, flight control, and communication, laying the foundation for subsequent lunar landing and exploration missions. Chang'e-1 and Chang'e-2: Evolution of Orbital Strategy from 'Throwing a Hammer' to 'Throwing a Spear' Chang'e-1 adopted multiple accelerations and orbit changes near Earth, gradually increasing its orbital altitude, and finally entering the lunar orbit (Earth Moon Transfer Orbit). This process is similar to a "throw chain ball", which accelerates through multiple rotations of the Earth's orbit and ultimately lands on the Moon. Chang'e-2, on the other hand, benefited from the increased rocket capacity and more precise orbit design, allowing it to directly enter the lunar orbit and fly from Earth to the moon. This process is likened to throwing a javelin, meaning it can reach the moon in a more direct and faster way. Flying over".

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

The orbits of Chang'e-1 and Chang'e-2: Scientists have designed a unique lunar exploration orbit, which first uses a rocket to send the satellite to a lower orbit, and then finds the right timing to accelerate the satellite multiple times. This allows the satellite to escape the Earth's gravity and fly towards the moon like a "chain throw". After being captured by the moon's gravity, it uses an engine to slow down and descend until it reaches the predetermined orbit. Unlike Chang'e-1's "hammer throw", Chang'e-2 can fly directly from Earth to the Moon like throwing a javelin, thanks to the improved rocket capacity and more precise orbit design. The expansion mission of Chang'e-2: Chang'e-2 will rendezvous and explore the asteroid "God of War" with the number 4179 at a distance of 7.02 million kilometers from Earth, accumulating experience for future small body exploration. Near month braking: also known as "space braking", solves the problem of "circling". If it doesn't slow down, Chang'e-1 may.