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ScienceDaily: Space & Time News |
| Powerful warm winds seen blowing from a neutron star as it rips up its companion Posted: 02 Mar 2022 08:05 AM PST Black holes and neutron stars are some of the most extreme objects in the Universe, ripping up neighboring stars. But they are messy eaters and much of they take in gets flung back into space. Scientists have now observed a neutron star blasting out warm and cold wind as it devoured another star. The findings shed new light on the behavior of these stellar cannibals and how they influence the evolution of galaxies. |
| A solar illusion: Coronal loops may not be what they seem Posted: 02 Mar 2022 06:27 AM PST Many coronal loops -- ropey strands of plasma that scientists have long thought existed in the sun's atmosphere -- may actually be optical illusions, according to a new paper that challenges prevailing assumptions of what we know, and don't know, about the sun. |
| 'Closest black hole' system found to contain no black hole Posted: 02 Mar 2022 06:27 AM PST In 2020, astronomers reported the closest black hole to Earth, located just 1000 light-years away in the HR 6819 system. But the results of their study were contested by other researchers. In a new paper, these two teams have united to report that there is in fact no black hole in HR 6819, which is instead a 'vampire' two-star system in a rare and short-lived stage of its evolution. |
| Did rapid spin delay 2017 collapse of merged neutron stars into black hole? Posted: 01 Mar 2022 01:20 PM PST Continuing X-ray observations by Chandra of the kilonova from the merger of two neutron stars to form a black hole hint at new processes. Initially, a gamma-ray burst and subsequent X-ray emissions told of a jet of material produced by the merger, but X-rays from this jet should be dimming. They're not, suggesting that ejecta from the merger, given an extra bounce from the merged neutron stars a second before collapse, is also generating X-rays. |
| What’s happening in the depths of distant worlds? Posted: 01 Mar 2022 10:10 AM PST The physics and chemistry that take place deep inside our planet are fundamental to the existence of life as we know it. But what forces are at work in the interiors of distant worlds, and how do these conditions affect their potential for habitability? New work uses lab-based mimicry to reveal a new crystal structure that has major implications for our understanding of the interiors of large, rocky exoplanets. |
| Scaling laws in enzymes may help predict life 'as we don't know it' Posted: 28 Feb 2022 01:16 PM PST A team of researchers is developing tools to predict the features of life as we don't know it. In a new study, they identify universal patterns in the chemistry of life that do not appear to depend on specific molecules. |
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