ScienceDaily: Astronomy News |
- NASA's Chandra X-ray Observatory celebrates 15th anniversary
- NASA's Fermi finds a 'transformer' pulsar
- Hubble traces halo of a galaxy more accurately than ever before: An in-depth look at giant elliptical galaxy Centaurus A
| NASA's Chandra X-ray Observatory celebrates 15th anniversary Posted: 22 Jul 2014 09:48 AM PDT Fifteen years ago, NASA's Chandra X-ray Observatory was launched into space aboard the Space Shuttle Columbia. Since its deployment on July 23, 1999, Chandra has helped revolutionize our understanding of the universe through its unrivaled X-ray vision. |
| NASA's Fermi finds a 'transformer' pulsar Posted: 22 Jul 2014 09:04 AM PDT In late June 2013, an exceptional binary containing a rapidly spinning neutron star underwent a dramatic change in behavior never before observed. The pulsar's radio beacon vanished, while at the same time the system brightened fivefold in gamma rays, the most powerful form of light, according to measurements by NASA's Fermi Gamma-ray Space Telescope. |
| Posted: 22 Jul 2014 07:22 AM PDT Astronomers have probed the extreme outskirts of the stunning elliptical galaxy Centaurus A. The galaxy's halo of stars has been found to extend much further from the galaxy's center than expected and the stars within this halo seem to be surprisingly rich in heavy elements. This is the most remote portion of an elliptical galaxy ever to have been explored. |
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