China launched its Chang’e 4 lander and rover today (December 8, 2:22 a.m. local time) from the Xichang Satellite Launch Center, as part of a mission that hopes to land on the far side of the Moon. Chang’e 4 is the next in the line of China’s Chang’e missions, and would be the first craft to land on the Moon’s far side. It demonstrates the competitiveness of the country’s space program on the international scene. Because the Moon is tidally locked with Earth—its day is the same length as its orbit—there’s a far side that never faces toward us. China launched its Queqiao satellite earlier this year in order to communicate with the lander and rover. The mission will explore the composition of the Moon’s largest impact crater, called the Von Kármán crater, which is 115 miles across (186 kilometers). It will use a spectrometer and radar to characterize the area where it touches down. The Moon’s far side is blocked off from the radio noise of Earth, and could serve as a potential location for a radio telescope. The mission contains radio spectrometers to characterize this radio wave environment. It also carries seeds as part of a “miniature biosphere” experiment to grow vegetables in the lunar soil. The spacecraft should take 27 days to arrive, reports the Planetary Society. Chang’e 4 follows a series of Chinese lunar missions, including two orbiters and a lander. It demonstrates the continued success of the country’s space program; it was the third nation… [Read full story]
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