ScienceDaily: Astronomy News |
- Interactive dark matter could explain Milky Way's missing satellite galaxies
- NASA's RapidScat: Some assembly required -- in space
- Evidence of 'diving' tectonic plates on Jupiter's moon Europa
- Planet forming around star about 335 light years from Earth
| Interactive dark matter could explain Milky Way's missing satellite galaxies Posted: 08 Sep 2014 05:46 PM PDT Scientists believe they have found a way to explain why there are not as many galaxies orbiting the Milky Way as expected. Computer simulations of the formation of our galaxy suggest that there should be many more small galaxies around the Milky Way than are observed through telescopes. This has thrown doubt on the generally accepted theory of cold dark matter, an invisible and mysterious substance that scientists predict should allow for more galaxy formation around the Milky Way than is seen. Now cosmologists think they have found a potential solution to the problem. |
| NASA's RapidScat: Some assembly required -- in space Posted: 08 Sep 2014 09:56 AM PDT NASA's ISS-RapidScat wind-watching scatterometer, which is scheduled to launch to the International Space Station no earlier than Sept. 19, will be the first science payload to be robotically assembled in space since the space station itself. This image shows the instrument assembly on the left, shrouded in white. On the right is Rapid-Scat's nadir adapter, a very sophisticated bracket that points the scatterometer toward Earth so that it can record the direction and speed of ocean winds. The two pieces are stowed in the unpressurized trunk of a SpaceX Dragon cargo spacecraft at Cape Canaveral Air Force Station in Florida. |
| Evidence of 'diving' tectonic plates on Jupiter's moon Europa Posted: 08 Sep 2014 09:22 AM PDT Scientists have found evidence of plate tectonics on Jupiter's moon Europa. This indicates the first sign of this type of surface-shifting geological activity on a world other than Earth. "Europa may be more Earth-like than we imagined, if it has a global plate tectonic system," said one of the researchers. |
| Planet forming around star about 335 light years from Earth Posted: 08 Sep 2014 09:15 AM PDT Scientists have discovered what they believe is evidence of a planet forming around a star about 335 light years from Earth. Astronomers set out to study the protoplanetary disk around a star known as HD 100546, and as sometimes happens in scientific inquiry, it was by "chance" that they stumbled upon the formation of the planet orbiting this star. |
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