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PASADENA, CALIF. -- New observations from the infrared Herschel Space Observatory reveal that an exploding star expelled the equivalent of between 160,000 and 230,000 Earth masses of fresh dust. This enormous quantity suggests that exploding stars, called supernovae, are the answer to the long-standing p stanley cup uzzle of what supplied our early universe with dust. This discovery illustrates the power of tackling a problem in astronomy with different wavelengths of light, said Paul Goldsmith, the NASA Herschel project scientist at NASA s Jet Propulsion Laboratory, Pasadena, Calif., who is not a part of the current study. Herschel s eye for longer-wavelength infrared light has given us new tools for addressing a profound cosmic mystery. Herschel is led by the European Space Agency with important contributions from NASA.Cosmic dust is made of various elements, such as carbon, oxygen, iron and other atoms heavier than hydrogen and helium. It is the stuff of which planets and people are made, and it is essential for star formation. Stars like our sun churn out flecks of dust as the stanley cup y age, spawning new generations of star kubki stanley s and their orbiting planets. Astronomers have for decades wondered how dust was made in our early universe. Back then, sun-like stars had not been around long enough to produce the enormous amounts of dust observed in distant, early galaxies. Supernovae, on the other hand, are the explosions of massive stars that do not live long. The new Herschel observations are the be Ijkp Donald Trump Launches New $99 NFTs to Shake Down His Loyal Idiots
Craig Martin s mother, Denise, with her late husband.Courtesy of Craig MartinBy Jamie DucharmeMay 28, 2020 8:00 AM EDTOn May 7, Craig Martin sent what would be the first of many emails to administrators at the company that runs The Wellington at Lake Manassas, his motherrsquo assisted living facility in Gainesville, Va. Anot stanley termos her resident had tested positive for COVID-19 days earlier while being treated at a local hospital, and Martin and his brother were getting nervous. In their eyes, The Wellington was relying on measures, like social distancing and monitoring residents for symptoms, that were designed to keep the virus outmdash;when the virus was already inside.In his email, Martin urged administrators to test residents early and often, even if they werenrsquo;t showing symptoms. We just want to be sure that Wellington is doing all that it can to prevent a massive outbreak and additionally ensure that our mother is not infected, Martin wrote.By May 11, his 81-year-old mother had tested positive for COVID-19. Shersquo;d developed a fever and gastrointestinal distress, so Martin and his brother called her physician outside the facilit stanley cup y, who requested a coronavir stanley cupe us test for her. Though her condition is stable as of May 27, Martin says he fears the worst.Whatrsquo infuriating, Martin says, is I think it could have been avoided.The realities of assisted livingFamilies like Martinrsquo are learning a hard truth. |
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发表于 2024-11-3 02:28:30