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Astronomers have found the first direct evidence that a wandering black hole can feed itself by dragging gas along in its wake as it moves through its galaxy. It’s the first direct evidence of an accretion channel long predicted in theory but never before observed. The paper describing this discovery was posted to the arXiv […] Nearly every galaxy has a supermassive black hole. The few that don’t have had theirs ejected during a galactic collision. That’s because galaxies and their black holes have formed hand in hand. There is still some debate as to whether galaxies formed around the seeds of supermassive black holes or the other way around, but […] Halley’s Comet captures the imagination in a way that few other astronomical objects do. When it last made its approach toward the sun (admittedly when this author, who is now middle-aged, was 1 year old in 1986), humanity responded with a fleet of spacecraft known informally as the “Halley Armada.” Yet because of the comet’s […] Material properties such as sound insulation, resistance to extreme heat and thermal expansion originate from how the zillions of microscopic building blocks (nuclei and electrons) interact at equilibrium and respond to perturbations. Atoms are typically about one ten-billionth of a meter across, so there can be a lot of parts to keep track of—a task […] Electronic voting, the use of electronic systems to cast, record or count votes, could potentially simplify the process of electing new political leaders or other representatives. While some countries have already started using internet-connected devices or electronic voting machines at polling stations, the trustworthiness, security and anonymity of electronic voting systems are still widely debated. […] Helium—the lightest atom that can be laser-cooled and controlled—powers a new design for high-powered, stable quantum computers. Go to Source Go to Source New York City opened a public portal containing 170,000 pages of 9/11 records sought for years by first responders, survivors and families concerned about Ground Zero health risks Go to Source Surveillance video shows the woman fire a gunshot in the Port Orange Police station lobby before walking back out into the parking lot and approaching officers Go to Source Surveillance video shows the woman fire a gunshot in the Port Orange Police station lobby before walking back out into the parking lot and approaching officers Go to Source The response was part of”Operation Street Sweeper,” a coordinated effort targeting street takeovers; 570 people were cited and seven firearms were recovered at the scene Go to Source The response was part of”Operation Street Sweeper,” a coordinated effort targeting street takeovers; 570 people were cited and seven firearms were recovered at the scene Go to Source Probationary police officer Kamir Loubarria collapsed while working out at the Stephen D. McDonald Police Academy; he was “committed to a life of service,” the department stated Go to Source Probationary police officer Kamir Loubarria collapsed while working out at the Stephen D. McDonald Police Academy; he was “committed to a life of service,” the department stated Go to Source UK astronomers have uncovered new clues about the origin of 3I/ATLAS—only the third known object from beyond the solar system ever spotted. In a new paper published in Monthly Notices of the Royal Astronomical Society, researchers reveal that the comet formed in extremely cold conditions, far from any star. Go to Source […] |
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