Watch an animation of a black hole shooting jets of particles through a "collapsing star at nearly the speed of light" and emit "x-rays and gamma rays (magenta)," according to NASA's Goddard Space ...

Since the formation of the Earth, natural background ionizing radiation has always emanated from the decays of 238 U, 232 Th, and 40 K, which are present in the environment [1, 2]. Two isotopes make ...

More information about a mysterious, energetic burst, formally known as a gamma-ray burst (GRB), spotted in space 13 billion light-years away from Earth, has been unveiled. The first sighting of this ...

Astronomers have detected a gamma-ray burst (GRB) like none other. GRB 250702B was longer than any ever observed and repeated. The GRB was "unlike anything ever witnessed before," according to the ...