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Resting on the tail of the Great Bear in the constellation of Ursa Major, lies NGC 5585, a spiral galaxy that is more than it appears.

The many stars, and dust and gas clouds that make up NGC 5585, shown here in this Hubble image, contribute only a small fraction of the total mass of the galaxy. As in many galaxies, this discrepancy can be explained by the abundant yet seemingly invisible presence of dark matter.

The stellar disc of the galaxy extends over 35,000 light-years across. When compared with galaxies of a similar shape and size, NGC 5585 stands out by having a notably different composition: Contributing to the total mass of the galaxy, it contains a far higher proportion of dark matter.

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Disc is left with warped and tilted rings.

The young triple star system GW Orionis appears to be surrounded by a ring of gas and dust that has torn away and become misaligned with the rest of the system’s circumstellar disc. That is the conclusion of an international team of astronomers led by Stefan Kraus at the University of Exeter – who combined observations with numerical simulations to identify disc structures that have been confined to theory until now.

Astronomers believe that most stars are born with one or more companions, which interact in complex ways with the disc of planet-forming gas and dust surrounding the stellar system. If this disc is misaligned with the orbital planes of the host stars, previous simulations have predicted that it will warp and tear under their gravitational torque, forming distinct rings in separate planes from the rest of the disc. So far, however, astronomers have yet to identify this tearing in their observations of misaligned discs.

In their study, Kraus’ team aimed to verify this tearing process by making detailed observations of the triple star system, GW Orionis. At just around 1 million years old, the system’s circumstellar disc has yet to collapse to form planets; while at its centre, the orbital planes of its three stars are highly misaligned with each other. Over 11 years beginning in 2008, the researchers used the Very Large Telescope (VLT) and Atacama Large Millimeter Array (ALMA) telescopes in Chile to measure thermal emissions and scattered visible light originating from the system. This allowed them to map the distribution of material in the disc.

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We recently observed the strongest magnetic field ever recorded in the Universe. The record-breaking field was discovered at the surface of a neutron star called GRO J1008-57 with a magnetic field strength of approximately 1 BILLION Tesla. For comparison, the Earth’s magnetic field clocks in at about 1/20,000 of a Tesla – tens of trillions of times weaker than you’d experience on this neutron star…and that is a good thing for your general health and wellbeing.

Neutron stars are the “dead cores” of once massive stars which have ended their lives as supernova. These stars exhausted their supply of hydrogen fuel in their core and a power balance between the internal energy of the star surging outward, and the star’s own massive gravity crushing inward, is cataclysmically unbalanced – gravity wins. The star collapses in on itself. The outer layers fall onto the core crushing it into the densest object we know of in the Universe – a neutron star. Even atoms are crushed. Negatively charged electrons are forced into the atomic nuclei meeting their positive proton counterparts creating more neutrons. When the core can be crushed no further, the outer remaining material of the star rebounds back into space in a massive explosion – a supernova.

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Kontrol Energy Corporation, a Canadian public Company, has launched BioCloud – an unobtrusive, wall-mounted technology which detects the presence of COVID-19 in the air. This can trigger an alert system giving real time notifications of the pathogen’s presence to facility managers, allowing outbreaks to be contained before they occur.

This represents a game changer in the fight against COVID-19, according to Kontrol. Immediate applications include schools, hospitals, long term care facilities and mass transit vehicles such as planes, trains and buses.

“There is a critical need for technology that can provide us with assurances that the workplaces, schools, healthcare environments and other spaces we physically occupy are safe and free of infectious disease. Today, we have that in BioCloud,” said Paul Ghezzi, Chief Executive Officer of Kontrol. “Our team has been working day and night since the onset of the pandemic to bring this exciting technology to market. It will be an invaluable tool to enhance the existing system of individual testing and contact tracing.”

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Recommending content, powering chatbots, trading stocks, detecting medical conditions, and driving cars. These are only a small handful of the most well-known uses of artificial intelligence, yet there is one that, despite being on the margins for much of AI’s recent history, is now threatening to grow significantly in prominence. This is AI’s ability to classify and rank people, to separate them according to whether they’re “good” or “bad” in relation to certain purposes.

At the moment, Western civilization hasn’t reached the point where AI-based systems are used en masse to categorize us according to whether we’re likely to be “good” employees, “good” customers, “good” dates and “good” citizens. Nonetheless, all available indicators suggest that we’re moving in this direction, and that this is regardless of whether Western nations consciously decide to construct the kinds of social credit system currently being developed by China.

This risk was highlighted at the end of September, when it emerged that an AI-powered system was being used to screen job candidates in the U.K. for the first time. Developed by the U.S.-based HireVue, it harnesses machine learning to evaluate the facial expressions, language and tone of voice of job applicants, who are filmed via smartphone or laptop and quizzed with an identical set of interview questions. HireVue’s platform then filters out the “best” applicants by comparing the 25,000 pieces of data taken from each applicant’s video against those collected from the interviews of existing “model” employees.

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Hu is part of a rising class of creators in China who are racing to get in on live-stream shopping, an emerging form of retail that has grown into an industry worth an estimated $66 billion. Although the trend has been part of Chinese internet culture for years, analysts say the coronavirus pandemic has made it mainstream.

A rising class of creators in China are racing to get in on live-stream shopping, an emerging form of retail that has become an estimated $66 billion industry.

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