ScienceDaily: Cosmic Rays News |
- Spiral galaxy spills blood and guts
- Researchers propose a new way to detect the elusive graviton
- Standard-candle supernovae are still standard, but why?
| Spiral galaxy spills blood and guts Posted: 04 Mar 2014 11:17 AM PST A new Hubble image shows spiral galaxy ESO 137-001, framed against a bright background as it moves through the heart of galaxy cluster Abell 3627. This cluster is violently ripping the spiral's entrails out into space, leaving bright blue streaks as telltale clues to this cosmic crime. |
| Researchers propose a new way to detect the elusive graviton Posted: 04 Mar 2014 08:35 AM PST A cosmologist and a physicist have proposed that measuring minute changes in the cosmic background radiation of the universe could be a pathway of detecting the telltale effects of gravitons. |
| Standard-candle supernovae are still standard, but why? Posted: 04 Mar 2014 06:48 AM PST Scientists believed that Type Ia supernovae, the best cosmological standard candles, are similar in brightness because they suffer thermonuclear explosions when the white dwarf stars that are their progenitors reach 1.4 solar masses, the Chandrasekhar mass. Now astronomers have shown that white dwarfs exploding as Type Ia supernovae have a range of masses. Their light-curve widths are directly proportional to the mass involved in the explosion. |
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