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NASA’s new black hole video is both terrifying and astonishing - globalnews.ca
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NASA’s new black hole video is both terrifying and astonishing
black holes actually are.“These monsters lurk in the centers of most big galaxies, including our own Milky Way, and contain between 100,000 and tens of billions of times more mass than our Sun,” NASA shares in an explanation of the video, adding that the animation “highlights the ‘super’ in supermassive black holes.”The video, released by the agency’s Goddard Space Flight Center Conceptual Image Lab, shows the gargantuan scale of black holes in comparison to other celestial features, most notably the Sun.Viewers are treated to a mind-bending comparison of how these black holes compare in size to our solar system and to each other.In just over 90 seconds, the animation tours 10 black holes of increasing size. Some of the holes are so big they make our solar system look like a speck of dust.“Only one of these colossal objects resides in our own galaxy, and it lies 26,000 light-years away,” the agency wrote, referring to supermassive black hole Sagittarius A*, which was first photographed just last year.Real and conceptual images of black holes don’t actually show the black hole itself, but rather a luminous disc surrounding the hole that’s comprised of gas and dusk, called an “accretion disc.”This immensely hot disc is swirly rapidly around the black hole and while some of it will fall in and never be seen again, most of it gets spit back out.“Black holes are terrible at eating things.
Health News - Peter Marks - World’s 1st RSV vaccine approved in U.S. for adults aged 60 and up - globalnews.ca - Usa - Canada
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World’s 1st RSV vaccine approved in U.S. for adults aged 60 and up
respiratory syncytial virus (RSV) was approved by the U.S. Food and Drug Administration (FDA) on Wednesday.The Arexvy vaccine, made by GlaxoSmithKline (GSK), was approved for the prevention of lower respiratory tract disease caused by RSV in individuals 60 years of age and older, according to an FDA release.“Older adults, in particular those with underlying health conditions, such as heart or lung disease or weakened immune systems, are at high risk for severe disease caused by RSV,” Peter Marks, director of the FDA’s Center for Biologics Evaluation and Research, said in the statement.“Today’s approval of the first RSV vaccine is an important public health achievement to prevent a disease which can be life-threatening and reflects the FDA’s continued commitment to facilitating the development of safe and effective vaccines for use in the United States.”RSV infection is a major cause of lower respiratory illness, particularly among infants, young children and older adults.Canada currently does not have a vaccine for RSV.However, Health Canada has accepted and is reviewing Pfizer Canada’s bivalent RSV vaccine for babies under six months and individuals aged 60 and above, the pharmaceutical company said in a statement on April 14.The health agency is also reviewing GSK’s RSV vaccine for adults 60 years of age and older.Several companies are creating RSV vaccines but Pfizer and rival GSK are furthest along.  The competing vaccines are made somewhat differently but each proved strongly effective, especially against serious disease.For most healthy people, RSV is a cold-like nuisance.For the very young, the elderly and people with certain health problems, it can be serious, even life-threatening.
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