The reporter learned from the National Astronomical Observatory of the Chinese Academy of Sciences that China's Tianyan FAST Neutral Hydrogen Sky Survey Project, led by Jiang Peng's team at the National Astronomical Observatory, released the second phase of the data set FASHI DR2 to build the world's largest sample bank of neutral hydrogen galaxies. The relevant results were published in an academic journal on September 8. Neutral hydrogen is an ancient basic substance in the universe. It is regarded as a “building material” for galaxies. It emits 21 cm radiation signal, which can penetrate interstellar dust and transmit information from the depths of the universe. The data set released this time captured a total of 156,000 neutral hydrogen galaxies, and the sky survey covered nearly half of the sky. The sample size was 5 times that of the previous international sky survey telescope. Compared with nearly 4 times the first data, it once again set a new world record.

The reporter learned from the National Astronomical Observatory of the Chinese Academy of Sciences that China's Tianyan FAST Neutral Hydrogen Sky Survey Project, led by Jiang Peng's team at the National Astronomical Observatory, released the second phase of the data set FASHI DR2 to build the world's largest sample bank of neutral hydrogen galaxies. The relevant results were published in an academic journal on September 8. Neutral hydrogen is an ancient basic substance in the universe. It is regarded as a “building material” for galaxies. It emits 21 cm radiation signal, which can penetrate interstellar dust and transmit information from the depths of the universe. The data set released this time captured a total of 156,000 neutral hydrogen galaxies, and the sky survey covered nearly half of the sky. The sample size was 5 times that of the previous international sky survey telescope. Compared with nearly 4 times the first data, it once again set a new world record.