Diamond's familiar ornamental role represents a relatively recent development - a consequence in part of scientists' growing understanding of the nature ... thinking of light rays having to ...

For the first time, astronomers have probed the physical environment of repeating X-ray outbursts near monster black holes ...

The hard X-ray FEL has come of age. A free-electron laser is not like other lasers. It works by forcing a beam of electrons, travelling at nearly the speed of light, to oscillate in a long ...

The work has been published in Nature Astronomy ... X-ray telescope sensitive enough to detect the fainter X-ray background light between the bursts. With XMM-Newton we could measure how dim ...