SCIENCE

China's Space Odyssey: Tianwen-2's Epic Journey to Asteroids and Comets

ChinaTue Jul 01 2025
China's space program is making waves with its ambitious Tianwen-2 mission. This isn't just another space adventure; it's a bold attempt to explore two celestial bodies in one go. The probe has already sent back a stunning photo of Earth and the Moon from half a million kilometers away. Pretty cool, right? Launched on May 29, 2025, Tianwen-2 is on a decade-long journey. First stop: asteroid Kamo’oalewa. Scientists think this asteroid might be a piece of the Moon, knocked off by some ancient impact. The probe will reach it in 2026, take pictures, analyze its makeup, and even collect samples to bring back to Earth by 2027. But Tianwen-2 isn't done after that. It's also heading to comet 311P/PANSTARRS. This comet is famous for its active tail and mysterious dust clouds. The probe will get up close, study its gases, dust, and chemicals. Scientists hope this will help us understand how water and life's building blocks ended up on Earth. Tianwen-2 is a big deal for China's space program. It's not just about keeping up with NASA and ESA; it's about pushing boundaries. This mission is all about asking big questions: Where did the Moon come from? How did Earth get its water? How did life begin? The probe has already traveled over 12 million kilometers and is working perfectly. It's a good sign that it can handle the complex tasks ahead. With its advanced cameras and instruments, Tianwen-2 is set to make some amazing discoveries.

questions

    What are the expected challenges in collecting and returning samples from Kamo’oalewa by 2027?
    How does the technology onboard Tianwen-2 compare to that of other international missions like OSIRIS-REx and Rosetta?
    What scientific evidence supports the hypothesis that Kamo’oalewa might be a fragment of the Moon?

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