China successfully launched the Queqiao-2 relay satellite on May 9, 2020. This spacecraft is part of the country's efforts to support lunar exploration missions, specifically the Chang'e-5 mission, which aims to collect samples from the Moon and return them to Earth. Queqiao-2 operates in a halo orbit around the second Earth-Moon Lagrange point (EML2), approximately 400,000 kilometers beyond the far side of the Moon.
The primary function of Queqiao-2 is to serve as a communication link between the Earth and lunar missions, particularly those operating on the Moon's far side, where direct communication with Earth is not possible due to the obstruction by the Moon itself. The satellite is equipped with high-frequency radio and laser communication systems to facilitate data transmission back to Earth.
The launch of Queqiao-2 ensures that China has continuous communication capabilities for its future lunar missions, including Chang'e-5, which is scheduled to land on the lunar surface, collect rocks and soil, and then launch back to Earth with these precious samples. The success of Queqiao-2 also demonstrates China's growing capability in deep space communication and its commitment to advancing its lunar exploration program.
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