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- Quarks and antiquarks at high momentum shake the foundations of visible matter
- Immense set of mysterious fast radio bursts
- Precise measurement of neutron lifetime
- Primates’ ancestors may have left trees to survive asteroid
- Photosynthesizing algae injected into the blood vessels of tadpoles supply oxygen to their brains
- Ancient feces shows people in present-day Austria drank beer and ate blue cheese up to 2,700 years ago
- Did Venus ever have oceans?
- How human disease-causing genes prevent adaptations to remove them
- Challenging the Big Bang puzzle of heavy elements
| Quarks and antiquarks at high momentum shake the foundations of visible matter Posted: 13 Oct 2021 12:22 PM PDT Two independent studies have illuminated unexpected substructures in the fundamental components of all matter. Preliminary results using a novel tagging method could explain the origin of the longstanding nuclear paradox known as the EMC effect. Meanwhile, authors will share next steps after the recent observation of asymmetrical antimatter in the proton. |
| Immense set of mysterious fast radio bursts Posted: 13 Oct 2021 10:16 AM PDT An international team of astronomers recently observed more than 1,650 fast radio bursts (FRBs) detected from one source in deep space, which amounts to the largest set -- by far -- of the mysterious phenomena ever recorded. The source, dubbed FRB 121102, was observed using the Five-hundred-meter Aperture Spherical Telescope (FAST) in China, and represents more FRBs in one event than all previous reported occurrences combined. |
| Precise measurement of neutron lifetime Posted: 13 Oct 2021 10:16 AM PDT Physicists have made the most precise measurement of the neutron's lifetime, which may help answer questions about the early universe. |
| Primates’ ancestors may have left trees to survive asteroid Posted: 13 Oct 2021 08:40 AM PDT When an asteroid struck 66 million years ago and wiped out dinosaurs not related to birds and three-quarters of life on Earth, early ancestors of primates and marsupials were among the only tree-dwelling (arboreal) mammals that survived, according to a new study. |
| Photosynthesizing algae injected into the blood vessels of tadpoles supply oxygen to their brains Posted: 13 Oct 2021 08:40 AM PDT Leading a double life in water and on land, frogs have many breathing techniques -- through the gills, lungs, and skin -- over the course of their lifetime. Now scientists have developed another method that allows tadpoles to 'breathe' by introducing algae into their bloodstream to supply oxygen. The method provided enough oxygen to effectively rescue neurons in the brains of oxygen-deprived tadpoles. |
| Posted: 13 Oct 2021 08:40 AM PDT Human feces don't usually stick around for long -- and certainly not for thousands of years. But exceptions to this general rule are found in a few places in the world, including prehistoric salt mines of the Austrian UNESCO World Heritage area Hallstatt-Dachstein/Salzkammergut. Now, researchers who've studied ancient fecal samples (or paleofeces) from these mines have uncovered some surprising evidence: the presence of two fungal species used in the production of blue cheese and beer. |
| Posted: 13 Oct 2021 08:40 AM PDT The planet Venus can be seen as the Earth's evil twin. At first sight, it is of comparable mass and size as our home planet, similarly consists mostly of rocky material, holds some water and has an atmosphere. Yet, a closer look reveals striking differences between them: Venus' thick CO2 atmosphere, extreme surface temperature and pressure, and sulphuric acid clouds are indeed a stark contrast to the conditions needed for life on Earth. This may, however, have not always been the case. Previous studies have suggested that Venus may have been a much more hospitable place in the past, with its own liquid water oceans. A team of astrophysicists investigated whether our planet's twin did indeed have milder periods. The results suggest that this is not the case. |
| How human disease-causing genes prevent adaptations to remove them Posted: 12 Oct 2021 10:07 AM PDT Scientists have identified a new detrimental effect of genes that cause inherited diseases. |
| Challenging the Big Bang puzzle of heavy elements Posted: 12 Oct 2021 08:22 AM PDT It has long been theorized that hydrogen, helium, and lithium were the only chemical elements in existence during the Big Bang, and that supernova explosions are responsible for transmuting these elements into heavier ones. Researchers are now challenging this and propose an alternative model for the formation of nitrogen, oxygen, and water based on the history of Earth's atmosphere. They postulate that the 25 elements with atomic numbers smaller than iron were created via an endothermic nuclear transmutation of two nuclei, carbon and oxygen. |
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