In this TV grab taken by CCTV (China Central Television) on 10 October 2017, the world's largest radio telescope called FAST (Five-hundred-meter Aperture Spherical Telescope), discovered two pulsars named J1859-01 and J1931-01 after one year of trial operation. After one year of trial operation, the China-based FAST, the world's largest single-dish radio telescope, has identified two pulsars, the National Astronomical Observatories of China (NAOC) said Tuesday (10 October 2017). The pulsars, named J1859-01 and J1931-01, are 16, 000 light years and 4, 100 light years from Earth with rotation periods of 1.83 seconds and 0.59 seconds, respectively. According to Li Di, chief scientist at the NAOC, the two pulsars were discovered on Aug. 22 and 25 when FAST was drift-scanning the southern galactic plane. The discovery was later confirmed by the Australia-based 64-meter Parkes radio telescope in September.
