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ScienceDaily: Space & Time News |
| Astronomers discover how to feed a black hole Posted: 29 Jul 2021 11:34 AM PDT Researchers have discovered long narrow dust filaments which surround and feed black holes in the centers of galaxies, and which could be the natural cause of the darkening of the centers of many galaxies when their nuclear black holes are active. |
| Planetary scientist puts Mars lake theory on ice with new study that offers alternate explanation Posted: 29 Jul 2021 11:34 AM PDT For years scientists have been debating what might lay under the Martian planet's south polar cap after bright radar reflections were discovered and initially attributed to water. But now, a new study puts that theory to rest and demonstrates for the first time that another material is most likely the answer. |
| Earthly rocks point way to water hidden on Mars Posted: 29 Jul 2021 09:21 AM PDT A combination of a once-debunked 19th-century identification of a water-carrying iron mineral and the fact that these rocks are extremely common on Earth, suggests the existence of a substantial water reservoir on Mars, according to a team of geoscientists. |
| Scientists observe gas re-accretion in dying galaxies for the first time Posted: 29 Jul 2021 06:52 AM PDT A new study suggests that previously displaced gases can re-accrete onto galaxies, potentially slowing down the process of galaxy death caused by ram pressure stripping, and creating unique structures more resistant to its effects. |
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