Science News Headlines | The monster galaxy that suddenly died
Coronavirus: China wildlife trade ban ‘should be permanent’. BEIJING-Campaigners have urged China to apply a permanent ban on the wildlife trade following the coronavirus outbreak. Markets selling live animals are considered a potential source of diseases that are new to humans. There has been speculation just such a market in Wuhan could have been the starting point for the outbreak. China put a temporary ban on trade-in wildlife as one measure to control the spread of coronavirus, but conservationists say it’s not enough. They argue that, in addition to protecting human health, a permanent ban would be a vital step in the effort to end the illegal trading of wildlife. Campaigners say that China’s demand for wildlife products, which find uses in traditional medicine, or as exotic foods, is driving a global trade in endangered species. Two critical software defects plagued the Starliner test flight. After failing to rendezvous with the International Space Station as planned during Starliner’s first orbital flight test in December last year, an independent review carried out to determine what went wrong has found, “two critical software defects” that were not detected ahead of flight despite multiple safeguards, says a statement by the agency, one of which could have had serious connotations for the spaceship during reentry. Following Starliner’s troubled Orbital Flight Test (OFT) mission late last year, a joint investigation team consisting of NASA and Boeing officials was established in January tasked with examining the primary issues that occurred during the test flight. At the time of the incident, it was revealed by mission officials that problems with Starliner's onboard timer were behind the capsule consuming more fuel than anticipated, thus preventing Starliner from docking with the space station. Although engineers regained control of the situation and put the spacecraft into a safe orbit, a further review of other critical components led engineers to uncover a “valve mapping software issue,” within the Service Module (SM) Disposal Sequence said the agency in a teleconference on 7 February. Stephen Hawking’s Quantum Black Hole Hypothesis Supported by Gravitational Wave Echoes. Echoes in gravitational-wave signals suggest that the event horizon of a black hole may be more complicated than scientists currently think. Research from the University of Waterloo reports the first tentative detection of these echoes, caused by a microscopic quantum “fuzz” that surrounds newly formed black holes. Gravitational waves are ripples in the fabric of space-time, caused by the collision of massive, compact objects in space, such as black holes or neutron stars. “According to Einstein’s Theory of General Relativity, nothing can escape from the gravity of a black hole once it has passed a point of no return, known as the event horizon,” explained Niayesh Afshordi, a physics and astronomy professor at Waterloo. “This was scientists’ understanding for a long time until Stephen Hawking used quantum mechanics to predict that quantum particles will slowly leak out of black holes, which we now call Hawking radiation. “Scientists have been unable to experimentally determine if any matter is escaping black holes until the very recent detection of gravitational waves,” said Afshordi. “If the quantum fuzz responsible for Hawking radiation does exist around black holes, gravitational waves could bounce off of it, which would create smaller gravitational wave signals following the main gravitational collision event, similar to repeating echoes.” The monster galaxy that suddenly died. It lived 12 billion years ago — an incredible span of time — churning out stars at a high rate, and then, it suddenly died. We are talking, of course, about the monster galaxy XMM-2599, subject of a study published in the latest edition of the Astrophysical Journal, Xinhua reported. “Even before the universe was 2 billion years old, XMM-2599 had already formed a mass of more than 300 billion suns, making it an ultra massive galaxy,” said the study’s lead author Benjamin Forrest, with University of California Riverside (UC Riverside). The researchers also found that the galaxy formed most of its stars in a huge frenzy when the universe was less than 1 billion years old, the report said. It formed more than 1,000 solar masses a year in stars at its peak of activity, which was an extremely high rate of star formation. For More Details Please Visit: https://widelyexplore.com/ Like our Facebook page: https://www.facebook.com/todaysciencenews Music by Audionautix is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://audionautix.com/
Coronavirus: China wildlife trade ban ‘should be permanent’. BEIJING-Campaigners have urged China to apply a permanent ban on the wildlife trade following the coronavirus outbreak. Markets selling live animals are considered a potential source of diseases that are new to humans. There has been speculation just such a market in Wuhan could have been the starting point for the outbreak. China put a temporary ban on trade-in wildlife as one measure to control the spread of coronavirus, but conservationists say it’s not enough. They argue that, in addition to protecting human health, a permanent ban would be a vital step in the effort to end the illegal trading of wildlife. Campaigners say that China’s demand for wildlife products, which find uses in traditional medicine, or as exotic foods, is driving a global trade in endangered species. Two critical software defects plagued the Starliner test flight. After failing to rendezvous with the International Space Station as planned during Starliner’s first orbital flight test in December last year, an independent review carried out to determine what went wrong has found, “two critical software defects” that were not detected ahead of flight despite multiple safeguards, says a statement by the agency, one of which could have had serious connotations for the spaceship during reentry. Following Starliner’s troubled Orbital Flight Test (OFT) mission late last year, a joint investigation team consisting of NASA and Boeing officials was established in January tasked with examining the primary issues that occurred during the test flight. At the time of the incident, it was revealed by mission officials that problems with Starliner's onboard timer were behind the capsule consuming more fuel than anticipated, thus preventing Starliner from docking with the space station. Although engineers regained control of the situation and put the spacecraft into a safe orbit, a further review of other critical components led engineers to uncover a “valve mapping software issue,” within the Service Module (SM) Disposal Sequence said the agency in a teleconference on 7 February. Stephen Hawking’s Quantum Black Hole Hypothesis Supported by Gravitational Wave Echoes. Echoes in gravitational-wave signals suggest that the event horizon of a black hole may be more complicated than scientists currently think. Research from the University of Waterloo reports the first tentative detection of these echoes, caused by a microscopic quantum “fuzz” that surrounds newly formed black holes. Gravitational waves are ripples in the fabric of space-time, caused by the collision of massive, compact objects in space, such as black holes or neutron stars. “According to Einstein’s Theory of General Relativity, nothing can escape from the gravity of a black hole once it has passed a point of no return, known as the event horizon,” explained Niayesh Afshordi, a physics and astronomy professor at Waterloo. “This was scientists’ understanding for a long time until Stephen Hawking used quantum mechanics to predict that quantum particles will slowly leak out of black holes, which we now call Hawking radiation. “Scientists have been unable to experimentally determine if any matter is escaping black holes until the very recent detection of gravitational waves,” said Afshordi. “If the quantum fuzz responsible for Hawking radiation does exist around black holes, gravitational waves could bounce off of it, which would create smaller gravitational wave signals following the main gravitational collision event, similar to repeating echoes.” The monster galaxy that suddenly died. It lived 12 billion years ago — an incredible span of time — churning out stars at a high rate, and then, it suddenly died. We are talking, of course, about the monster galaxy XMM-2599, subject of a study published in the latest edition of the Astrophysical Journal, Xinhua reported. “Even before the universe was 2 billion years old, XMM-2599 had already formed a mass of more than 300 billion suns, making it an ultra massive galaxy,” said the study’s lead author Benjamin Forrest, with University of California Riverside (UC Riverside). The researchers also found that the galaxy formed most of its stars in a huge frenzy when the universe was less than 1 billion years old, the report said. It formed more than 1,000 solar masses a year in stars at its peak of activity, which was an extremely high rate of star formation. For More Details Please Visit: https://widelyexplore.com/ Like our Facebook page: https://www.facebook.com/todaysciencenews Music by Audionautix is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://audionautix.com/