Cosmic rays are particles from outer space that travel across the universe. They can be made by the sun, by other stars exploding, and even black holes. They move extremely fast, nearly the speed of ...

Blazars are types of quasars that stand out because the beams of high-energy ... created when an ultramassive cosmic ray particle slammed into particles of light, or "photons," left in the ...

Researchers have finally found a way to make a real-life levitation ray, but it can only lift microscopic material.

And even more exotic processes arising from the generation of relativistic electrons within a target can be exploited to produce not just particle beams, but novel sources of X-ray radiation.

Pulsars are the remnants of large stars that exploded in a supernova. Check out these 7 stunning pulsar images shared by NASA.