# Astronomical discoveries of radio transients and X-ray/star- > Live situation record from CLSTR: https://clstr.news/situations/astronomical-discoveries-of-radio-transients-and-x-raystar > Updated: 2026-10-23T22:37:53.000Z. Sources: 2. Developments: 2. Astronomers have identified several unusual celestial phenomena through radio and X-ray observations. Initial findings included the identification of a Long-Period Radio Transient (LPT) designated GLEAM-X J0704−37, which emits pulses every 2.9 hours from a binary system of a red dwarf and a white dwarf. Additionally, researchers identified 84 hypersoft X-ray sources (HSS) in nearby galaxies, such as Andromeda, which emit low-energy X-rays that were previously difficult to detect. Subsequent research led to the discovery of a binary neutron star system, PSR J1856-0039, using the FAST radio telescope. This system, with a mass approximately 2.488 times that of the Sun, offers new data for testing general relativity. Astronomers are also investigating VT J1906+0849, a radio transient located at least 49,000 light-years away that has maintained high brightness in the radio spectrum for roughly two decades while exhibiting unexpected changes in peak emission frequency. ## Timeline ### 2026-10-23: Astronomers discover binary neutron star system and mysterious radio source Astronomers have identified a new binary neutron star system in China and a mysterious, long-lasting radio transient object in the Milky Way. 2 sources. https://clstr.news/cluster/astronomers-discover-binary-neutron-star-system-and-mysterious-radio-source ### 2026-09-25: Astronomers identify new radio transients and X-ray sources Astronomers have identified new celestial phenomena, including a long-period radio transient linked to a white dwarf and 84 mysterious low-energy X-ray sources in nearby galaxies. 5 sources. https://clstr.news/cluster/astronomers-identify-new-radio-transients-and-x-ray-sources --- Cite as: Astronomical discoveries of radio transients and X-ray/star-. CLSTR, https://clstr.news/situations/astronomical-discoveries-of-radio-transients-and-x-raystar