A computer simulation shows how two neutron stars of unequal mass merge, form a black hole and spit out a jet of high energy matter.

Combining the way that massive galaxies and galaxy clusters bend space and magnify our view of the distant universe with ...

Astronomers have uncovered a new extreme in the universe's catalog of violent phenomena — a class of cosmic explosions so ...

New research led by the University of Osaka reports the multi-sensor detection of an intense gamma-ray flash that occurred ...

Researchers have generated the shortest hard X-ray pulses ever — using an intense XFEL beam and a novel lasing process.

Astronomers have discovered the largest known cloud of energetic particles surrounding a galaxy cluster—spanning nearly 20 ...

The object, named ASKAP J1832-0911, sends out bursts of radio waves and X-rays that last two minutes and repeat every 44 ...

Electromagnetic radiation is the general term for the more familiar light and radio waves, but also includes gamma rays, x rays, ultraviolet rays, and infrared. All of these forms of ... But, with ...