ScienceDaily: Astronomy News |
- Voyager 1 has left the solar system
- Cosmic turbulences result in star and black hole formation
- Spaceflight alters bacterial social networks
- Galaxies had 'mature' shapes 11. 5 billion years ago
| Voyager 1 has left the solar system Posted: 15 Aug 2013 10:37 AM PDT Voyager 1 appears to have at long last left our solar system and entered interstellar space, says a University of Maryland-led team of researchers. Their model indicates Voyager 1 actually entered interstellar space a little more than a year ago, a finding directly counter to recent articles suggesting the spacecraft was still in a fuzzily-defined transition zone between the Sun's sphere of influence and the rest of the galaxy. |
| Cosmic turbulences result in star and black hole formation Posted: 15 Aug 2013 10:37 AM PDT Just how stars and black holes in the Universe are able to form from rotating matter is one of the big questions of astrophysics. Now, physicists show how magnetic fields can also cause turbulences within "dead zones," thus making an important contribution to our current understanding of just how compact objects form in the cosmos. |
| Spaceflight alters bacterial social networks Posted: 15 Aug 2013 07:51 AM PDT In two studies biofilms grown aboard the International Space Station bound space shuttle were compared with those grown on the ground. The study results show for the first time that spaceflight changes the behavior of bacterial communities. |
| Galaxies had 'mature' shapes 11. 5 billion years ago Posted: 15 Aug 2013 05:39 AM PDT Astronomers have established that mature-looking galaxies existed much earlier than previously known, about 11.5 billion years ago. |
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