Word: x-rayed
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...that time, technical limitations meant scientists had only identified one x-ray nova as definitely containing a black hole. But new technologies have shown Garcia and his fellow researchers three more x-ray novae with black holes...
Researchers looked at x-ray novae, which are pairs of stars that rotate quickly and very close to each other. One of the stars in an x-ray nova is a normal star, like the sun, and the other one is a dense, compact star...
...some x-ray novae, the dense star is a neutron star. In these situations, gas and other matter flow away from the normal star and eventually collide with the surface of the neutron star--causing an explosion that releases a bright burst of energy...
...other x-ray novae, the dense star is actually a black hole, a place where all of the star's mass has collapsed to a single point with no volume but an infinitely strong gravitational pull...
...were pleased that the PRS 400, our miniature X-ray source, was included in your Inventions 2000 report, but we want to clarify one point for your readers. Our device is a valuable tool for radiation treatment given in the operating room at the time of tumor removal and for the treatment of brain tumors for which radiation is used instead of surgery. At the present time, it is not a replacement for standard radiation therapy or chemotherapy. Clinical trials are under way, however, that could prove that treatment during surgery using our device may be the only therapy needed...