China science, technology news summary -- Nov. 27

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BEIJING, Nov. 27 (Xinhua) -- The following is a summary of published science and technology news of China.

SPECIAL DWARF GALAXIES

Chinese astronomers have discovered a special population of dwarf galaxies that mainly consist of baryons with radii of up to tens of thousands of light-years, where they are expected to be dominated by dark matter.

The discovery, made by researchers from the National Astronomical Observatories of the Chinese Academy of Science (NAOC), Peking University and Tsinghua University, was published in the latest issue of the science journal Nature Astronomy.

SINO-DUTCH DETECTOR

A detector, jointly developed by Dutch and Chinese scientists and carried by the relay satellite of China's Chang'e-4 mission, has started scientific detection.

The antennas of the low-frequency radio spectrometer on the relay satellite Queqiao, meaning Magpie Bridge, have been unfolded, and the detector is expected to help astronomers listen to the deeper reaches of the cosmos, according to the China National Space Administration.

ARTIFICIAL SUN

The HL-2M Tokamak, China's next-generation "artificial sun," is expected to be operational in 2020 as installation work has gone smoothly since the delivery of the coil system in June.

Designed to replicate the natural reactions that occur in the sun using hydrogen and deuterium gases as fuels, the device aims at providing clean energy through controlled nuclear fusion.

ARTIFICIAL SPIDER SILK

Chinese scientists have developed a kind of fiber that mimics the qualities of spider silk.

Scientists from Nankai University developed a simple synthetic method to engineer artificial spider silk using hydrogel fibers made from polyacrylic acid. The material achieved mechanical properties comparable to spider silk. It has high strength, slow elasticity and good scalability. Enditem

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