An international team, including researchers from National Astronomical Observatories of China, recently found that the stellar-mass black hole in the Cygnus X-1binary system has a mass 21 times the mass of the Sun and rotates at a speed close to the speed of light.
The latest observations from Insight-HXMT were published online in <EM>Nature Astronomy</EM> on Feb. 18. Insight-HXMT has discovered the very first X-ray burst associated with a fast radio burst (FRB) and has identified that it originated from soft-gamma repeater (SGR) J1935+2154, which is a magnetar in our Milky Way.
Even with the COVID-19-related small dip in global carbon emissions due to limited travel and other activities, the ocean temperatures continued a trend of breaking records in 2020. A new study led by the Institute of Atmospheric Physcis reported the highest ocean temperatures since 1955 from surface level to a depth of 2,000 meters.
Chinese scientists have established the world's first integrated quantum communication network, combining over 700 optical fibers on the ground with two ground-to-satellite links to achieve quantum key distribution over a total distance of 4,600 kilometers for users across the country.
President XI Jinping called on Saturday for scientists and engineers working on deep-sea equipment and exploration to keep contributing to China's rise as a strong maritime country, as well as humanity's understanding, conservation and development of the oceans.
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