Direct observational evidence for the existence of black hole accretion flow wind is found
Chinese scientists have discovered direct observational evidence of the presence of wind in the accretion flow of black holes. There is a supermassive black hole in the center of almost all galaxies in the universe. The gas around the black hole falls towards the black hole under the action of the black hole's gravity, forming a black hole accretion disk. The accretion disk emits strong radiation and material outflow. The radiation captured in the first photo of a black hole in humans originates from the accretion disk. Black hole accretion is the theoretical basis for studying important high-energy astrophysics phenomena such as active galactic nuclei and gamma-ray bursts.
Hawking black hole area theorem is confirmed by observation for the first time
In 1971, the famous British physicist Stephen Hawking proposed that the area of the black hole's event horizon (the boundary from which nothing can escape) will never decrease. This is the famous Hawking black hole area theorem. Fifty years later, physicists from the Massachusetts Institute of Technology and other universities in the United States used gravitational wave detectors to confirm this theorem for the first time. The team plans to detect future gravitational wave signals to see if it can further confirm the Hawking black hole area theorem, or discover "clues" in new physics.
Changes in the Earth’s orbit help to nurture complex life forms
British scientists have discovered that changes in the earth’s orbit may prompt the emergence of complex life and multiply to complete the biological evolution process in the earth’s climate change. The shape and inclination of the earth's orbit around the sun are constantly changing, and the swing of the earth's rotation axis has also undergone periodic changes. These astronomical cycles change the amount of solar radiation reaching the surface of the earth, thereby affecting and controlling the earth’s climate. This discovery is very important because it is now known that complex multicellular life originated during the climate crisis, but previously scientists could not explain why.
Chinese scientists realize the fastest real-time quantum random number generator
Random numbers are an important resource and have application requirements in many fields such as information security, cryptography, and scientific simulation. However, it is a difficult problem to manually generate a large number of "true random numbers". Professors Pan Jianwei and Zhang Jun of the University of Science and Technology of China, together with the research group of Professor Tao Tao of Zhejiang University, achieved the world's fastest real-time quantum random number generation with a rate of 18.8Gbps (switching bandwidth) through the development of silicon-based photonic integrated chips and optimization processing Device. This research result laid the technical foundation for the development of a low-cost commercial quantum random number generator single chip.
"Tianhe" E-level verification system won two crowns
Developed by the National University of Defense Technology and deployed in the university’s "Tianhe" E-class (exascale) computer key technology verification system, it won the SSSP Graph500 (single source shortest path) list and the world’s first and BIG Data Green Graph500 (big data) Graph computing energy efficiency) list the best results in the world. The achievement of this achievement indicates that the "Tianhe" supercomputer has achieved an internationally leading breakthrough in data-intensive applications, which has an important supporting role in improving my country's artificial intelligence and big data processing capabilities.
Research shows that there are more than 200 symptoms of "long-term new crown"
Some patients with new coronary pneumonia may experience symptoms that last for several weeks or months after the infection disappears. This symptom is called "post-coronary syndrome" or "long-term new coronary syndrome." According to a study, patients who have experienced "long-term COVID-19" have reported a total of more than 200 symptoms, covering 10 organ systems in the human body. Based on the responses of 3,762 eligible participants from 56 countries, the researchers identified a total of 203 symptoms in these 10 organ systems. This is currently the largest international study on the “long-term new crown”.
Japanese scientists reconstruct "in vitro ovaries"
Japanese scientists have brought a new breakthrough in the field of stem cells. They used mouse embryonic stem cells to create the structure required for oocyte maturation-the follicle in the ovary. In the "in vitro follicles" made by stem cells, primordial germ cells are able to produce fully functional eggs, which are eventually fertilized and give birth to healthy mouse offspring. This technology has stimulated the great potential of germ cell research and provided a model system for large-scale egg production in vitro, which may have an impact on assisted reproductive technology.
Researchers use "gene scissors" for the first time to treat genetic diseases
For a long time, if people want to use the CRISPR (short palindromic repeats at regular intervals) gene editing technology called "gene scissors" to treat genetic diseases, a huge obstacle needs to be cleared: inject molecular scissors tools directly into the affected In the cell, DNA cleavage can be achieved. British researchers injected a CRISPR drug into the blood of a patient with a rare genetic disease for the first time. This new work is a crucial first step in inactivating, repairing or replacing disease-causing genes in any part of the body.