China Spacesat(SH:600118) Huan Qiu Wang Zi Xun·2025-05-29 01:38Core Points - China's Tianwen-2 probe successfully launched on May 29, marking the country's first asteroid exploration and sample return mission [1][2] - The mission aims to explore and collect samples from asteroid 2016 HO3, with a planned return to Earth by the end of 2027 [7][8] Group 1: Mission Overview - The Tianwen-2 mission is a significant engineering project, described as a relay race, with the successful launch being the first leg [4] - The probe is equipped with 11 scientific payloads to enhance understanding of small celestial bodies [8] - The mission has a total duration of approximately 10 years, including subsequent exploration of main belt comet 311P [7] Group 2: Technical Details - The Long March 3B rocket, known for its reliability, executed its 109th mission and was specifically designed for this escape trajectory [14][16] - The launch required high precision, with the entry trajectory needing to be accurate to within 1 meter per second [21] - The design and preparation for the mission involved three times the usual workload due to the complexities of deep space exploration [23] Group 3: Challenges and Innovations - The Tianwen-2 mission is characterized by its high difficulty, long duration, and significant risks [8] - The rocket team faced challenges in optimizing the launch process and ensuring timely execution of the mission [20][18] - Innovations in guidance methods were implemented to meet the demands of deep space trajectory requirements [21]