A team of engineers and scientists has shown for the first time that a hard-X-ray cavity can provide net X-ray gain, with ...

Where starlight doesn't reach, new things are born: For the first time, an international research team has directly measured ...

Physicists are no longer content to let atoms blur into invisibility. By squeezing light into pulses that last just billionths of a billionth of a second and pairing them with cameras that tick at ...

Hamburg-based researchers have developed a system that generates better X-ray pulses at the European X-Ray Free-Electron ...

Dustin Swarm, an astrophysicist and assistant professor at the University of Iowa, recently helped capture the first X-ray view of a white dwarf star. Swarm, in collaboration with MIT, studied the ...

Artist’s impression of the powerful winds blowing from the bright X-ray source GX13+1. The X-rays are coming from a disc of hot matter, known as an accretion disc, that is gradually spiralling down to ...

An early black hole feeds too fast—yet still blasts X-rays and radio jets.

Can we turn back time? Ask a savvy physicist, and the answer will be “it depends.” Schemes for retrograde time travel abound but usually involve irreconcilable paradoxes and rely on outlandish ...