A space historian explores how the advent of radio astronomy led to the USSR’s search for extraterrestrial life
The planetary radar, built in 1960 in Crimea, from which the Morse signal ‘MIR, Lenin, USSR’ was sent in November...
Astro
Extremely massive stars forged oldest star clusters in the universe, model suggests
On the left, an artist’s impression of a globular cluster near its birth, hosting extremely massive stars with powerful stellar...
Taking the moon’s temperature with beeswax
A grid of the wax samples used in the Passive Wax Thermometer Experiment. Credit: Space Science Reviews (2025). DOI: 10.1007/s11214-025-01217-y...
Astronomers may have found the first stars that formed after the Big Bang
Credit: Neale LaSalle from Pexels For years, astronomers have been on the hunt for the first generation of stars, primordial...
Follow-up observations determine their fundamental parameters
Flux and polarization calibrated GBT 820-MHz composite profile of PSR J0535–0231 based on an 2.97 hours of data. Credit: arXiv...
Quasi-periodic oscillation detected in distant blazar’s gamma-ray band
The Fermi-LAT light curve of 4FGL J0309.9-6056 for ∼ 16 years (MJD 54683−60503). The gray inverted triangles represent the 95%...
Do black holes really need singularities?
This artist’s concept portrays the supermassive black hole at the center of the Milky Way galaxy, known as Sagittarius A*...
Scientists recreate cosmic ‘fireballs’ to probe mystery of missing gamma rays
The Fireball experiment installed in the HiRadMat irradiation area. Credit: Gianluca Gregori An international team of scientists, led by the...
Seas of the Sun, the story of Cluster
The first recorded observation of a satellite reentry from a high-speed orbit, taken from a plane in bright daylight. Credit:...
Modeling black holes is easier with a flicker of light
A sequence of snapshots simulating the rotating Hayward black hole. Credit: Science China Press/Guo, et al A few days ago,...