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Astronomers can peer at galaxies clear across the universe, but they have a hard time looking at the center of our own Milky Way. Only 26,000 light-years from Earth, the [...]

Photons left over from the birth of the universe appear to have helped generate the longest X ray-emitting jet ever found in a distant galaxy. Discovered by NASA's Chandra X-ray [...]

Astronomers have unveiled the first X-ray image of Venus, one of Earth's closest neighbors. The observations, taken by the Earth-orbiting Chandra X-ray Observatory and released last week, may provide new [...]

Observations of rapid oscillations in the intensity of X rays emitted by gas striking a neutron star's surface provide a novel test of Einstein's general theory of relativity. A typical [...]

From arsenic to zinc, black holes gobble up every element within their grasp. Even among such undiscriminating diners, some have bigger appetites than others. Researchers report that for the first [...]

The more ways astronomers look at the center of our galaxy the more curious things they find. This time, an-ray survey of the center of the galaxy using the satellite [...]

X-ray fireworks put on a stellar show Astronomers have detected a new, surprisingly strong source of X-rays, which appear to come from a pair of stars in the constellation Cygnus. [...]