BEIJING, June 23 (Xinhua) -- The following is a summary of published science and technology news of China.

LAUNCH OF BEIDOU

China launched the last satellite of the BeiDou Navigation Satellite System from the Xichang Satellite Launch Center in southwest China's Sichuan Province at 9:43 a.m. on Tuesday (Beijing Time).

The satellite, the 55th in the family of BeiDou that means "Big Dipper" in Chinese, was sent into space by a Long March-3B carrier rocket, according to the China Satellite Navigation Office.

SOLAR TELESCOPE

A Chinese large solar telescope has recently captured images of the sun's surface with details, indicating that this optical instrument can detect solar storm warnings, said scientists.

The Chinese Large Solar Telescope, with a 1.8-meter aperture, was developed by the Institute of Optics and Electronics under the auspices of the Chinese Academy of Sciences. It captured the first batch of high-resolution images of the solar atmosphere on Dec. 10, 2019.

COVID-19 ASYMPTOMATIC INFECTIONS

Chinese researchers have revealed that the asymptomatic infections of COVID-19 have a weaker immune response compared with the symptomatic ones.

A research team from the Chongqing Medical University studied 37 asymptomatic cases, aging from eight to 75 years old, who were admitted to the Wanzhou People's Hospital, southwest China's Chongqing Municipality, for quarantine. Enditem

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