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ScienceDaily: Space & Time News |
| Hidden processes at work in the hearts of large stars revealed Posted: 13 May 2021 09:39 AM PDT Astronomers commonly refer to massive stars as the chemical factories of the Universe. They generally end their lives in spectacular supernovae, events that forge many of the elements on the periodic table. How elemental nuclei mix within these enormous stars has a major impact on our understanding of their evolution prior to their explosion. It also represents the largest uncertainty for scientists studying their structure and evolution. |
| Of mice and spacemen: Understanding muscle wasting at the molecular level Posted: 11 May 2021 09:36 AM PDT Skeletal muscles undergo atrophy, or wasting, under conditions of reduced gravity, such as during spaceflight. Researchers explored the effects of microgravity and artificial gravity (1 g) on mice housed at the International Space Station for 35 days. Artificial gravity successfully prevented the gross and molecular changes observed in the muscles of mice subjected to microgravity. |
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