April 22 is Earth Day. Chang'e-1, the lunar-orbiting satellite, sent back a voice recording both advocating for and cherishing mother Earth; and sent back a song: "Who doesn't love my hometown." According to a statement by the National Defense Science and Technology Industry Bureau on the 21st, by April 20, the Chang'e-1 satellite had been circling around moon for 166 days. It has completed more than 1,800 laps. At present, the satellite is in sideways, circumlunar flight mode, at a stable altitude, and with a normally functioning subsystem.
By People's Daily Online