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天津武清区龙济医院男性泌尿科
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发布时间: 2025-06-02 08:08:37北京青年报社官方账号
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The Geminid meteor shower peaks this week, so hope for clear skies that will let you see a beautiful show of green fireballs on Thursday and Friday. This will be the last -- and strongest -- meteor shower of the year, according to NASA.This phenomenon was first recorded in 1862 and causes a show each December.In the hours before sunrise Friday, the most meteors will be visible in the North American sky, peaking about 7:30 a.m. ET, predicts Sky & Telescope. To see when they will peak in your part of the world, check here.But the morning isn't your only chance. On Thursday and Friday, keep an eye on the sky a few hours after sunset -- just keep the moon at your back.Although the Geminid shower is known for its "shooting stars," the number of meteors visible depends on the time and how dark it is. There will be fewer of them earlier in the evening, but the shower should hit a maximum of about 100 per hour around 2 a.m., NASA said. For those in the suburbs, expect about 30 to 40 per hour. And if you're in a city like New York, San Francisco or Atlanta, you probably won't see anything.Early evening meteors may be longer, with dramatic streaks that last several seconds. Later on, the meteors will present quicker streaks or leave trails of smoke that appear to glow.The asteroid 3200 Phaethon is responsible for this meteor shower, which is unusual because comets usually create meteor showers with icy debris. Scientists have debated the very nature of what Phaethon is. The closely tracked near-Earth asteroid has been likened to comets, so it's been called a "rock comet."Phaethon was discovered in October 1983 and named after the Greek myth about the son of Helios, the sun god, because it closely approaches our sun.Phaethon orbits the sun closer than any other asteroid and takes 1.4 years to orbit it. The asteroid heats to about 1,300 degrees Fahrenheit on closest approach to the sun, which causes it to shed dusty debris.These particles cause the meteor shower when they plunge into Earth's atmosphere at 22 miles per second, vaporizing in the streaks we call "shooting stars."If you live in an urban area, you may want to drive to a place that isn't littered with city lights that will obstruct your view. If you're able to find an area unaffected by light pollution, meteors could be visible every couple of minutes from 10 p.m. until dawn.Find an open area with a wide view of the sky, and don't forget to bundle up. Make sure you have a chair or blanket so you can look straight up. And give your eyes about 20 to 30 minutes to adjust to the darkness -- without looking at your phone -- so meteors are easier to spot.While you're keeping an eye out for the meteor shower, you might see a small, foggy green patch in the sky, NASA said. That will be Comet 46P/Wirtanen, which is making its closest approach to Earth -- within 7 million miles -- for the next 20 years. And it will be visible to the naked eye. The comet is expected to come closest to Earth and peak Sunday. 3007

  天津武清区龙济医院男性泌尿科   

The Franklin Park Zoo announced its newest member of their family: a baby boy gorilla.On Tuesday, the zoo said the baby, who is the first male baby gorilla born at the zoo, was delivered via Cesarean section by veterinarians and physicians.The Zoo New England, which operates Franklin Park Zoo, said in a press release that Kiki needed the procedure after noticing that western lowland gorilla mom Kiki was experiencing vaginal bleeding days before her due date."The veterinary team at Zoo New England became concerned that she may have placenta previa, a condition where the placenta lies over the entrance to the cervix, blocking the path for delivery of the baby," zoo officials said in the release.After conducting an ultrasound on Kiki, which confirmed she had placenta previa, the zoo's veterinary team and Brigham and Women's Hospital and Cummings School of Veterinary Medicine at Tufts University specialists performed a C-section.And after a quick and smooth surgery, Kiki gave birth to a 6-pound baby boy. 1023

  天津武清区龙济医院男性泌尿科   

The death toll from the 6.9-magnitude earthquake that hit the Indonesian island of Lombok more than a week ago has surged to 436, authorities said Monday.The number is expected to rise further as search and rescue efforts continue in the rubble strewn across the island by the quake and another one that struck on August 9.Indonesia's National Disaster Management Agency (BNPB) has been working with the country's military and police to supply aid and food to the 350,000 people displaced by the quakes.As of Monday, 21 tonnes of aid had been delivered on a cargo plane, according to BNPB spokesperson Sutopo Purwo Nugroho. 631

  

The Dow Jones Industrial just closed above 29,000! You are so lucky to have me as your President??With Joe Hiden’ it would crash??— Donald J. Trump (@realDonaldTrump) September 2, 2020 192

  

The FDA said in a news conference on Friday that there have been “roughly" five adverse reactions to Pfizer’s coronavirus vaccine, which began distribution earlier this week.According to FDA and Pfizer officials, 2.9 million doses of the vaccine was distributed this week. Those doses mostly went to health care workers and those living and working in assisted living facilities. It’s unclear exactly how many of those 2.9 million doses have been administered, as of Friday.Dr. Peter Marks, director of the Center for Biologics Evaluation and Research, told reporters on Friday that one of the five adverse events caused a serious reaction. Marks did not go into detail on the locations or conditions of all the cases. The FDA has not responded for a request for additional information.Marks said that a case in Alaska was the most serious of the reactions being investigated.“We will continue to watch these closely. It is difficult to talk about them without any kind of good certainty until we have more information on them,” Marks said.FDA officials said that it’s possible the reactions were from the vaccine’s active ingredient polyethylene glycol. According to government information, the ingredient can cause known side effects such as bloating, diarrhea, nausea, cramps, gas and hives.FDA administrator Dr. Stephen Hahn said that the vaccine’s monitoring program is working well.“One of the things the FDA does well and uniquely is really getting to the bottom to events like allergic reactions,” Hahn said.On Friday, a second vaccine received FDA authorization. The vaccine from Moderna received an emergency use authorization, which means the vaccine can now be administered outside of a clinical or hospital setting. 1736

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