China announced the cooperation plan for its future Chang'e-6 mission, offering to carry a total of 20-kg solicited payloads, according to the China National Space Administration (CNSA) on Thursday.

The orbiter and lander of the Chang'e-6 mission will each reserve 10 kg for payloads, which will be selected from both domestic colleges, universities, private enterprises and foreign scientific research institutions, said Liu Jizhong, director of the China Lunar Exploration and Space Engineering Center of the CNSA, at a press conference.

The Chang'e-6 mission will be designed to bring samples back from the South Pole of the moon, revealed the administration earlier.

China invites world scientists to explore asteroid, comet together
China on Thursday unveiled its plan to explore an asteroid and a comet, inviting scientists around the world to participate in the program.

The mission will involve exploring a near-Earth asteroid, named 2016HO3, and a main-belt comet, named 133P, said Liu Jizhong, director of the Lunar Exploration and Space Program Center of the China National Space Administration (CNSA).

China has offered to carry scientific instruments developed by other countries on the mission, according to Liu.

He said the mission is still under discussion. According to the current plan, a probe will be sent to fly around asteroid 2016HO3 and then land on it to collect samples.

Then the probe will fly back to the proximity of Earth, and a return capsule will be released to bring the samples back to Earth.

After that, the probe will continue its journey. With the assistance of the gravity of Earth and Mars, it will finally arrive at the main asteroid belt and orbit the comet 133P to explore it.

The whole mission will last about 10 years, according to Liu.

Scientists aim to measure the physical parameters of the asteroid and the comet to get an understanding about their orbit, rotation, shape, size and thermal radiation.

They also want to study their morphology, surface composition and internal structure.

When the asteroid samples are returned, scientists will conduct lab analysis on its physical properties, chemical and mineral components, isotopic composition, structure and age.

They will compare the samples with meteorites, as well as ground-based observation, remote-sensing and in-situ analysis.

Scientists are also interested in the environment of the comet 133P and the potential water and organic materials on it.

Liu said China began to solicit proposals on eight types of scientific instruments to be used in the mission among universities, research organizations and private enterprises both at home and abroad.

Chinese and foreign institutions and scientists are encouraged to jointly propose the schemes and develop the detectors, Liu said.

The instruments include a color camera with an intermediate field of view, thermal emission spectrometer, visible and infrared imaging spectrometer, multispectral camera, detection radar, magnetometer, charged and neutral particle analyzer and dust analyzer, according to Liu.

He said there might be two forms of onboard schemes. One possible scheme is to carry an independent detector on the rocket. After China's main probe enters the orbit, the onboard detector will separate from the rocket and then perform independent tasks. Its mass should not exceed 200 kg.

The other possible option is to let China's main probe carry the onboard detector to the near-Earth asteroid or the main-belt comet and then release it. The detector could either perform independent scientific exploration or coordinate with the main probe.

If the onboard detector does not separate with the main probe, its mass should not exceed 20 kg. If the detector separates from the main probe near the asteroid, its mass should be no more than 80 kg. If it separates from the main probe near the comet, its mass should not exceed 20 kg.

Liu said those interested in participating in the mission could contact the CNSA, and the deadline for the proposals will be August 31, 2019.

On Dec. 13, 2012, China's second lunar probe, Chang'e-2, after successfully completing its mission, rendezvoused with an asteroid named Toutatis at a distance of 770 meters, as the space rock, bigger than a city block, swept by Earth at a distance of around 7 million kilometers.

It was the world's first close fly-by observation of Toutatis. The probe took high-resolution images providing a number of discoveries.

So far, China has achieved five continuous successes in its lunar exploration program, including Chang'e-1, Chang'e-2, Chang'e-3, a test craft for Chang'e-5 and Chang'e-4.

China's Chang'e-4 probe made the first-ever soft landing on the far side of the moon at the beginning of this year. Chang'e-5 is scheduled to be launched at the end of this year to return lunar samples back to Earth.

China plans to launch a probe to explore Mars in 2020, which is expected to arrive at the red planet in 2021. China is also drawing up plans on its future lunar and deep space explorations.

"China has always valued exchanges and cooperation with its international counterparts while promoting deep space exploration and scientific and technological innovation," said Zhang Kejian, head of the CNSA.

China will contribute its wisdom, plans and strength in humankind's peaceful utilization of outer space, said Zhao Jian, deputy director of the Department of System Engineering of CNSA.

The Chang'e-4 mission embodies China's hope to combine wisdom in space exploration with four payloads developed by the Netherlands, Germany, Sweden and Saudi Arabia. The first batch of scientific data has been delivered to scientists or officials from those countries.

Source: Xinhua News Agency

Related Links
China National Space Administration (CNSA)
The Chinese Space Program - News, Policy and Technology
China News from SinoDaily.com

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