ScienceDaily: Astronomy News |
- IBEX spacecraft measures changes in the direction of interstellar winds buffeting our solar system
- Coldest brown dwarfs blur lines between stars and planets
- Interstellar winds buffeting our solar system have shifted direction
- Powerful jets discovered blowing material out of galaxy
- No evidence of planetary influence on solar activity
| IBEX spacecraft measures changes in the direction of interstellar winds buffeting our solar system Posted: 05 Sep 2013 01:05 PM PDT Neutral interstellar atoms are flowing into the solar system from a different direction than previously observed. |
| Coldest brown dwarfs blur lines between stars and planets Posted: 05 Sep 2013 01:05 PM PDT Astronomers are constantly on the hunt for ever-colder star-like bodies, and two years ago a new class of such objects was discovered. However, until now no one has known exactly how cool their surfaces really are -- some evidence suggested they could be room temperature. A new study shows that while these brown dwarfs, sometimes called failed stars, are warmer than previously thought with temperatures about 250-350 degrees Fahrenheit. |
| Interstellar winds buffeting our solar system have shifted direction Posted: 05 Sep 2013 11:28 AM PDT Scientists have discovered that the particles streaming into the solar system from interstellar space have likely changed direction over the last 40 years. |
| Powerful jets discovered blowing material out of galaxy Posted: 05 Sep 2013 11:27 AM PDT Astronomers using a worldwide network of radio telescopes have found strong evidence that a powerful jet of material propelled to nearly light speed by a galaxy's central black hole is blowing massive amounts of gas out of the galaxy. This process, they said, is limiting the growth of the black hole and the rate of star formation in the galaxy, and thus is a key to understanding how galaxies develop. |
| No evidence of planetary influence on solar activity Posted: 05 Sep 2013 07:19 AM PDT In 2012, Astronomy & Astrophysics published a statistical study of the isotopic records of solar activity, in which scientists claimed that there is evidence of planetary influence on solar activity. A&A is publishing a new analysis of these isotopic data. It corrects technical errors in the statistical tests performed earlier. They find no evidence of any planetary effect on solar activity. |
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