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What were the most important achievements of the Soviet Luna missions?
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Moon
(Left) Near side of Earth's Moon, photographed by the Galileo spacecraft on its way to Jupiter. (Right) Far side of the Moon with some of the near side visible (upper right), photographed by the Apollo 16 spacecraft.
The Soviet Luna program achieved several historic milestones in lunar exploration between 1959 and 1976:
- Early Milestones: Luna 1 was the first spacecraft to escape Earth’s gravity. Luna 2 became the first to strike the Moon, and Luna 3 performed the first circumnavigation, returning the first photographs of the Moon's far side.12
- Landing and Orbiting: Luna 9 achieved the first successful soft landing in 1966, revealing the nature of the lunar regolith. That same year, Luna 10 became the first spacecraft to orbit the Moon.12
- Sample Return: Luna 16 (1970) was the first uncrewed mission to successfully return lunar soil samples to Earth, a feat later expanded upon by Luna 24, which retrieved samples from two meters below the surface.1
- Robotic Exploration: The program pioneered mobile lunar exploration with the Lunokhod 1 and 2 rovers, which transmitted live images and data while traversing the surface.13
These missions provided critical scientific data, including evidence of the Moon's basaltic composition and the mechanical properties of its surface, marking significant advancements in robotic space exploration.2