ScienceDaily: Astronomy News |
- Voyager spacecraft might not have reached interstellar space
- New approach in search for extraterrestrial intelligence: Target alien polluters
- Atmosphere of Titan, Saturn's largest moon
- Lives and deaths of sibling stars
- Satellite galaxies put astronomers in a spin
| Voyager spacecraft might not have reached interstellar space Posted: 23 Jul 2014 08:41 AM PDT In 2012, the Voyager mission team announced that the Voyager 1 spacecraft had passed into interstellar space, traveling further from Earth than any other humanmade object. But, in the nearly two years since that historic announcement, and despite subsequent observations backing it up, uncertainty about whether Voyager 1 really crossed the threshold continues. |
| New approach in search for extraterrestrial intelligence: Target alien polluters Posted: 23 Jul 2014 08:12 AM PDT Humanity is on the threshold of being able to detect signs of alien life on other worlds. By studying exoplanet atmospheres, we can look for gases like oxygen and methane that only coexist if replenished by life. But those gases come from simple life forms like microbes. What about advanced civilizations? Would they leave any detectable signs? They might, if they spew industrial pollution into the atmosphere. |
| Atmosphere of Titan, Saturn's largest moon Posted: 23 Jul 2014 08:10 AM PDT An astronomer has published the results of the comparison of his model of Titan's atmosphere with the latest data. |
| Lives and deaths of sibling stars Posted: 23 Jul 2014 08:09 AM PDT In a new image from ESO, young stars huddle together against clouds of glowing gas and lanes of dust. The star cluster, NGC 3293, would have been just a cloud of gas and dust itself about ten million years ago, but as stars began to form it became the bright group of stars we see here. Clusters like this are laboratories that allow astronomers to learn about how stars evolve. |
| Satellite galaxies put astronomers in a spin Posted: 23 Jul 2014 08:08 AM PDT Astronomers have studied 380 galaxies and shown that their small satellite galaxies almost always move in rotating discs. However, such satellite galaxy discs are not predicted by current models of the formation of structures in the Universe. This discovery could cause modelers serious headaches in the years ahead. |
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