China Chang'e-6 Moon Science Mission: Far Side & NASA Lunar Orbiter Images
The ascender of China's Chang'e-6 probe successfully lifted off from the Moon's surface on June 4, 2024, carrying samples collected from the Moon's far side south pole—for the first time in human lunar exploration history. The Chang'e-6 probe—consisting of an orbiter, a lander, an ascender and a returner, like its predecessor Chang'e-5—was launched on May 3, 2024. After a month-long journey, Chang'e-6's lander-ascender combination touched down at the designated landing area in the South Pole-Aitken (SPA) Basin on Sunday, June 2, 2024. The lander is on the rim of an eroded, 55-yard-diameter (about 50 meters) crater.
The SPA basin (43°±2° south latitude, 154°±4° west longitude) is a large impact crater on the far side of the Moon. At roughly 2,500 km (1,600 mi) in diameter and between 6.2 and 8.2 km (3.9–5.1 mi) deep, it is the largest, oldest, and deepest basin recognized on the Moon.
The Chang’e 6 landing site is situated toward the southern edge of the Apollo basin (about 306 miles or 492 km in diameter, centered at 36.1 degrees south latitude, 208.3 degrees east longitude). Basaltic lava erupted south of Chaffee S crater about 3.1 billion years ago and flowed downhill to the west until it encountered a local topographic high, likely related to a fault. Several wrinkle ridges in this region have deformed and raised the mare surface. The landing site sits about halfway between two of these prominent ridges. This basaltic flow also overlaps a slightly older flow (about 3.3 billion years old), visible further west, but the younger flow is distinct because it has higher iron oxide and titanium dioxide abundances.
In 2020, Chang'e-5 was the first lunar sample-return mission since the Soviet Union's Luna 24 in 1976. The mission made China the third country to return samples from the Moon after the United States and the Soviet Union.
Image Credits: CLEP-China Lunar Exploration Program/NASA/Goddard/Arizona State University
Image Dates: June 2-7, 2024
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