ScienceDaily: Strange Science News |
- The planet does not fall far from the star
- Aided by stem cells, a lizard regenerates a perfect tail for first time in more than 250 million years
- Evidence of superionic ice provides new insights into unusual magnetic fields of Uranus and Neptune
- Sense of smell is our most rapid warning system
- How the Sun’s magnetic forces arrange gas particles
- To watch a comet form, a spacecraft could tag along for a journey toward the sun
| The planet does not fall far from the star Posted: 14 Oct 2021 11:20 AM PDT A compositional link between planets and their respective host star has long been assumed in astronomy. Scientists now deliver empirical evidence to support the assumption -- and partly contradict it at the same time. |
| Posted: 14 Oct 2021 11:19 AM PDT Lizards can regrow severed tails, making them the closest relative to humans that can regenerate a lost appendage. But in lieu of the original tail that includes a spinal column and nerves, the replacement structure is an imperfect cartilage tube. Now, a study describes how stem cells can help lizards regenerate better tails. |
| Evidence of superionic ice provides new insights into unusual magnetic fields of Uranus and Neptune Posted: 14 Oct 2021 10:12 AM PDT Not all ice is the same. The solid form of water comes in more than a dozen different - sometimes more, sometimes less crystalline - structures, depending on the conditions of pressure and temperature in the environment. Superionic ice is a special crystalline form, half solid, half liquid - and electrically conductive. Its existence has been predicted on the basis of various models and has already been observed on several occasions under - very extreme - laboratory conditions. New results provide another piece of the puzzle in the spectrum of the manifestations of water. And they may also help to explain the unusual magnetic fields of the planets Uranus and Neptune, which contain a lot of water. |
| Sense of smell is our most rapid warning system Posted: 14 Oct 2021 07:01 AM PDT The ability to detect and react to the smell of a potential threat is a precondition of our and other mammals' survival. Using a novel technique, researchers have been able to study what happens in the brain when the central nervous system judges a smell to represent danger. The study indicates that negative smells associated with unpleasantness or unease are processed earlier than positive smells and trigger a physical avoidance response. |
| How the Sun’s magnetic forces arrange gas particles Posted: 13 Oct 2021 08:41 AM PDT Solar prominences hover above the visible solar disk like giant clouds, held there by a supporting framework of magnetic forces, originating from layers deep within the Sun. The magnetic lines of force are moved by ever-present gas currents -- and when the supporting framework moves, so does the prominence cloud. A research team has observed how magnetic forces lifted a prominence by 25,000 kilometers -- about two Earth diameters -- within ten minutes. |
| To watch a comet form, a spacecraft could tag along for a journey toward the sun Posted: 13 Oct 2021 05:15 AM PDT A new article proposes that space probes could hitch a ride with 'centaurs' as they become comets. Along the way, the spacecraft would gather data that would otherwise be impossible to record -- including how comets, Earth-like planets, and even the solar system formed. |
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