Gas around black holes and interstellar medium distribution are key factors in understanding the growth of supermassive black holes and the evolution of their host galaxies. However, as a crucial parameter, gas density is hard to determine reliably, because the general method is not applicable to all quasars. Source: https://phys.org/news/2021-03-sharp-broad-absorption-line-variations.html…
Tag: host
Bitcoin Could Either Become Preferred Currency For International Trade Or Face a ‘Speculative Implosion,’ Citi Says
An anonymous reader quotes a report from Reuters: Bitcoin rose nearly 7% on Monday as risk assets rallied after last week’s bond rout cooled, with Citi saying the most popular cryptocurrency was at a “tipping point” and could become the preferred currency for international trade. With the recent embrace of the likes of Tesla and Mastercard, bitcoin could be at the…
Cities Are Starting To Ban New Gas Stations
Petaluma, California, has voted to outlaw new gas stations, the first of what climate activists hope will be numerous cities and counties to do so. From a report: The movement aims to accelerate the shift to electric vehicles. “This is not a ban on the existing gas stations, which are providing all the gas currently needed,” Matt Krogh, U.S. oil and…
Cosmic ray originated in cataclysmic event
Astronomers found a high energy neutrino – a cosmic ray – that apparently originated during a “tidal disruption event,” that is, when a supermassive black hole shredded a distant star. Source: https://earthsky.org/space/origin-cosmic-ray-when-black-hole-shreds-star…
Evidence for white dwarfs consuming Earth-like worlds
For the first time, astronomers have detected the vaporized remains of the crusts of long-dead Earth-like and Mars-like planets in the atmospheres of white dwarf stars. Source: https://earthsky.org/space/vaporized-earth-like-mars-like-crusts-white-dwarf-stars…
Swarm of black holes discovered
For the first time, astronomers have detected the presence of a throng of black holes crowding near the center of an ancient globular cluster. Source: https://earthsky.org/space/group-black-holes-found-globular-cluster-ngc-6397…
Pfizer-BioNTech’s COVID-19 Vaccine Just Got a Lot Easier to Distribute
Pfizer and BioNTech “have asked the U.S. health regulator to relax requirements for their COVID-19 vaccine to be stored at ultra-low temperatures, potentially allowing it to be kept in pharmacy freezers,” reports Reuters, which adds that approval “could send a strong signal to other regulators around the world that may ease distribution of the shot in lower-income countries.” Slashdot reader FrankOVD…
Parler is Back Online, More Than a Month After Tangle With Amazon Knocked it Offline
Parler is back online following several weeks of darkness after the social media site popular with supporters of former president Donald Trump was knocked offline. From a reportL: Parler effectively fell off the Internet in January when Amazon refused to provide technical cloud computing support to the site after the tech giant determined Parler was not doing enough to moderate and…
Coca-Cola Begins Testing a Paper Bottle
“Coca-Cola is to test a paper bottle as part of a longer-term bid to eliminate plastic from its packaging entirely,” reports the BBC: The prototype is made by a Danish company from an extra-strong paper shell that still contains a thin plastic liner. But the goal is to create a 100% recyclable, plastic-free bottle capable of preventing gas escaping from carbonated…
There’s a Tantalizing Sign of a Habitable-Zone Planet in Alpha Centauri
An international team of astronomers has found signs that a habitable planet may be lurking in Alpha Centauri, a binary star system a mere 4.37 light-years away. It could be one of the closest habitable planet prospects to date, although it’s probably not much like Earth if it exists. From a report: The new findings: The Alpha Centauri system’s potential to…