ScienceDaily: Galaxies News |
| Most distant gravitational lens helps weigh galaxies Posted: 17 Oct 2013 08:14 AM PDT Astronomers have found the most distant gravitational lens yet -- a galaxy that, as predicted by Albert Einstein's general theory of relativity, deflects and intensifies the light of an even more distant object. The discovery provides a rare opportunity to directly measure the mass of a distant galaxy. But it also poses a mystery: lenses of this kind should be exceedingly rare. |
| Fat black holes grown up in 'cities': Observational result using virtual observatory Posted: 17 Oct 2013 05:01 AM PDT Massive black holes of more than one million solar masses exist at the center of most galaxies. Some of the massive black holes are observed as active galactic nuclei (AGN) which attract surrounding gas and release huge amounts of energy. |
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