ScienceDaily: Astronomy News |
- Van Allen Probes shed light on decades-old mystery
- Starless cloud cores reveal why some stars are bigger than others
- Birth of black hole kills the radio star
- Scientists solve a decades-old mystery in Earth's upper atmosphere
| Van Allen Probes shed light on decades-old mystery Posted: 20 Dec 2013 05:07 PM PST New research using data from NASA's Van Allen Probes mission helps resolve decades of scientific uncertainty over the origin of ultra-relativistic electrons in Earth's near space environment, and is likely to influence our understanding of planetary magnetospheres throughout the universe. |
| Starless cloud cores reveal why some stars are bigger than others Posted: 20 Dec 2013 11:35 AM PST Massive stars -- those at least 8 times the mass of our Sun -- present an intriguing mystery: how do they grow so large when the vast majority of stars in the Milky Way are considerably smaller? Massive stars -- those at least 8 times the mass of our Sun -- present an intriguing mystery: how do they grow so large when the vast majority of stars in the Milky Way are considerably smaller? To find the answer, astronomers used the Atacama Large Millimeter/submillimeter Array telescope to survey the cores of some of the darkest, coldest, and densest clouds in our Galaxy to search for the telltale signs of star formation. |
| Birth of black hole kills the radio star Posted: 20 Dec 2013 08:40 AM PST Astronomers have discovered a new population of exploding stars that "switch off" their radio transmissions before collapsing into a Black Hole. These exploding stars use all of their energy to emit one last strong beam of highly energetic radiation -- known as a gamma-ray burst -- before they die. |
| Scientists solve a decades-old mystery in Earth's upper atmosphere Posted: 18 Dec 2013 10:37 AM PST New research resolves decades of scientific controversy over the origin of ultra-relativistic electrons in the Earth's near space environment, and is likely to influence our understanding of planetary magnetospheres throughout the universe. |
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