ScienceDaily: Astronomy News |
- Gravitational waves help us understand black-hole weight gain
- Incoming comet ISON appears intact to NASA's Hubble
- Astronomer helps research team see misaligned planets in distant system
- Most distant gravitational lens helps weigh galaxies
- Fat black holes grown up in 'cities': Observational result using virtual observatory
| Gravitational waves help us understand black-hole weight gain Posted: 17 Oct 2013 02:40 PM PDT Supermassive black holes: every large galaxy's got one. But here's a real conundrum: how did they grow so big? A new article pits the front-running ideas about the growth of supermassive black holes against observational data -- a limit on the strength of gravitational waves, obtained with CSIRO's Parkes radio telescope in eastern Australia. |
| Incoming comet ISON appears intact to NASA's Hubble Posted: 17 Oct 2013 11:44 AM PDT A new image of the sunward plunging Comet ISON taken by NASA's Hubble Space Telescope on October 9, 2013, suggests that the comet is intact despite some predictions that the fragile icy nucleus might disintegrate as the Sun warms it. The comet will pass closest to the Sun on November 28. |
| Astronomer helps research team see misaligned planets in distant system Posted: 17 Oct 2013 11:44 AM PDT NASA's Kepler space telescope has helped astronomers see a distant planetary system featuring multiple planets orbiting their host star at a severe tilt. |
| 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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