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China’s Mars probe Tianwen-1 sends back images of Martian satellite

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The orbiter of China’s Mars probe Tianwen-1 relayed high-definition images of the red planet’s natural satellite Phobos on Saturday, which marks the two-year anniversary of the launch of the mission.

China launched the Tianwen-1 mission on July 23, 2020, sending an orbiter, a lander and a rover to the red planet. The orbiter entered the orbit of Mars in February 2021, and the lander and rover touched down on Mars and started operations in May 2021.

Mars has two small natural satellites, Phobos and Deimos (which mean fear and terror).

Phobos is the innermost and larger of the two.

It’s a small, irregularly shaped object with a mean radius of 11 km that orbits 6,000 km from the Martian surface in a near circular trajectory. It completes an orbit in just 7 hours and 39 minutes.

Recently, the Tianwen-1 operation team seized the timing when the orbiter was relatively close to Phobos and captured clear images of the satellite in its “full moon” state.

The photo of Martian satellite Phobos taken by the orbiter of China’s Mars probe Tianwen-1 is released on July 23, which marks the two-year anniversary of the launch of the mission. /CMG

In the picture, Phobos is an irregularly shaped object like a potato. Streaks on its surface in the upper left might have been formed through impact. In the upper right is an impact crater, named Öpik after the Estonian astronomer and astrophysicist, with a diameter of about 2 km.

Source: CGTN

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China to improve sci-tech services for rural population

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China will launch a national campaign to better mobilize the science and technology sector to contribute to the country’s rural revitalization drive, according to a new set of guidelines.

Jointly issued by the China Association for Science and Technology and the National Rural Revitalization Administration, the guidelines specify a series of key tasks, including providing sci-tech training, lectures and industry-specific guidance to rural areas.

Sci-tech associations at all levels are called on to lead grassroots sci-tech workers to join in the work of rural revitalization.

The guidelines also require the relevant authorities to incorporate the construction of science popularization facilities into the overall layout of rural infrastructure, expand the service coverage of mobile science popularization facilities and build more sci-tech museums in rural secondary schools.

Source: Xinhua

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China’s Tianzhou-3 cargo spacecraft re-enters Earth’s atmosphere

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Tianzhou-3, a cargo spacecraft that carried supplies to China’s space station, made a controlled re-entry into the Earth’s atmosphere at 11:31 a.m. on Wednesday (Beijing Time), according to the China Manned Space Agency.

Tianzhou-3 makes a controlled re-entry into the Earth’s atmosphere, July 27, 2022. /CFP

The Long March-7 Y4 rocket carrying the Tianzhou-3 blasted off at 3:10 p.m. (BJT) on September 20, 2021, from the Wenchang Spacecraft Launch Site in south China’s Hainan Province. It carried about six tonnes of goods, including food items and spacesuits, to the country’s under-construction space station. Six and a half hours later, the cargo spacecraft docked with core module Tianhe at 10:08 p.m. (BJT) on the same day.

A 3D simulation of the Tianzhou-3 cargo spacecraft docking with China’s space station. /China Manned Space Agency

The Tianzhou-3 separated from the space station core module Tianhe on July 17, 2022, after completing all assigned assembly tasks.

It is the third mission of China’s Tianzhou-class unmanned cargo spacecraft and the second resupply mission to the space station after Tianzhou-2.

Source: CGTN

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Shanghai firm receives urgent monkeypox virus test kit orders from WHO

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Shanghai-based ZJ Biotech has received many urgent purchase orders from the World Health Organization (WHO) for its monkeypox virus test kit, and the company is now aiming to provide more support for accurate diagnosis and containment of the disease.

The WHO on Saturday activated its highest alert level for the growing monkeypox outbreak, declaring the virus a Public Health Emergency of International Concern.

The test kit developed by ZJ Biotech can accurately identify monkeypox virus by measuring the gene segment of the virus by specific fluorescence method.

“Currently the best detection method for many infectious pathogens across the world is the nucleic acid test, which has an accuracy rate of over 95 percent. It can reach more than 99 percent for some individual diseases,” said Shao Junbin, chairman of Shanghai ZJ Bio-Tech Co., Ltd.

The monkeypox virus test kit manufactured by the company has been sent to 41 countries and regions around the world. Of these, 24 emergency orders from the WHO were sent to 21 countries, covering Africa, Europe, Oceania and Southeast Asia.

At present, the company is in close contact with the WHO and health institutions in many countries around the world, aiming to provide support for accurate diagnosis and containment of the disease.

Source: CGTN

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