Shulou(Shulou.com)11/24 Report--

CTOnews.com, April 25, according to the Science and Technology Daily, Zhang Rongqiao, chief designer of China's first Mars exploration mission, said in an interview that the Tianwen-2 mission has basically completed the preliminary development stage, will be transferred to the prototype development stage in mid-2023, and will be launched around May 2025.

Zhang Rongqiao said that the detection object of the Tianwen-2 mission is an internationally recognized celestial body with its particularity-the near-Earth asteroid 2016HO3.

CTOnews.com Note: 2016HO3, an asteroid discovered on April 27, 2016, is considered to be the most stable quasi-satellite of the Earth so far. During the asteroid's one-year orbit around the sun, about half of the time is closer to the sun and passes in front of the earth; the other half of the year is farther from the sun and behind the earth. And there is a little angle between its orbital plane and the earth's orbital surface, so it rises to or sank below the earth's orbital surface once a year. As a result, the asteroid is playing a leapfrog game with Earth that will last for hundreds of years.

Zhang Rongqiao, source NASA / JPL of the ▲ 2016HO3 orbital operation chart, said that the Tianwen-2 mission will sample and return the asteroid, which will be the first time that China has retrieved samples from the interplanetary system. After completing this main task, Tianwen-2 will also go to explore a newly discovered comet 311p in the main belt.

Talking about the difficulties in asteroid detection, Zhang Rongqiao said that unlike Mars, there is no gravity on the asteroid, which means that the spacecraft cannot fly around the asteroid, can only catch it in the vast universe, fly with it, and attach in the process of accompanying flight, choose the opportunity to sample.

In addition, China has also planned the missions of Tianmen No. 3 and Tianmen No. 4. Zhang Rongqiao said that the Tianmen-3 mission will return from Mars, and the Tianwen-4 mission will explore the wooden galaxy. "the Tianmen-3 and Tianmin-4 missions are very difficult, and it will take two or three years to tackle key technical problems."

According to previous reports from CTOnews.com, China's Tianmen-1 probe was successfully launched on July 23, 2020. After a 202-day flight, it successfully entered the orbit of the encirclement fire. On May 15, 2021, the landing patrol landed at the target landing site. I wish the Rong rover to carry out patrol exploration.

On April 24, at the launching ceremony of the home event of "China Space Day" in 2023, the National Space Administration and the Chinese Academy of Sciences jointly released the global image map of China's first Mars exploration.

▲ Robinson projection, National Space Administration Press and publicity Center

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