太原痣疮了怎么办(太原肛门附近有硬块) (今日更新中)

SEATTLE — U.S. researchers have given a healthy volunteer the first shot of an experimental coronavirus vaccine as anxiously awaited testing opens. Monday’s milestone is just the first step in a long process. The effort is one of several worldwide hunting for protection against COVID-19, even as the pandemic grows. The study is run by scientists at the Kaiser Permanente Washington Research Institute in Seattle. The shots were developed by the National Institutes of Health in record time after the new coronavirus exploded from China. Experts say it will be at least a year before any vaccine is ready for widespread use. 637

SpaceX launched 60 more mini internet satellites late Monday, this time testing a dark coating to appease stargazers.It’s a “first step” compromise between SpaceX and astronomers fearful of having dark skies spoiled by hundreds and, eventually, thousands of bright satellites circling overhead.The Falcon 9 rocket blasted into a cold, clear night sky, recycled by SpaceX for its fourth flight. As the first-stage booster flew to a vertical landing on an ocean platform, the Starlink satellites continued hurtling toward orbit to join 120 similar spacecraft launched last year. Flight controllers applauded, and the launch commentator described the booster’s fourth touchdown as “awesome.” An hour later, all 60 satellites were free of their upper stage and making their own way in orbit. “It’s a beautiful sight,” the commentator observed.His Starlink fleet now numbering 180, SpaceX founder and chief executive Elon Musk plans to ultimately launch thousands of these compact flat-panel satellites to provide global internet service. Each spacecraft is just 575 pounds (260 kilograms).After the first Starlink batch of 60 was launched in May and the second in November, astronomers complained how the bright satellite chain was hampering their observations. In response, SpaceX came up with a darkening treatment to lessen reflectivity. The coating is being tested on one of the newly launched satellites.Jeff Hall, director of the Lowell Observatory in Flagstaff, Arizona, said the Starlinks have been just an occasional problem — so far — but noted the risk to stargazing will grow as the constellation expands and other companies launch their own fleets. He heads the American Astronomical Society’s committee on light pollution, space debris, and radio interference, and is working with SpaceX on the issue. The matter is on the agenda, in fact, at the society’s conference in Hawaii this week.“Anything that darkens the satellites is a step in the right direction,” Hall said in an email Monday. He said it’s too soon to know whether the dark coating will work, “but it definitely is just a first step and not enough to mitigate the issues astronomy will experience with the Starlinks.”The Starlinks are initially placed in a relatively low orbit of 180 miles (290 kilometeters), easily visible as a long, strung-out cluster parading through the night sky. Over a few months, krypton-powered thrusters raise the satellites to a 340-mile (550-kilometer) orbit. The higher the orbit, the less visible the satellites are from the ground, according to SpaceX. Even so, SpaceX said it’s supplying astronomy groups with the satellite coordinates in advance, so they can avoid the bright flyover times.Already established in launching satellites for others and making space station deliveries for NASA, SpaceX is among several companies looking to provide high-speed, reliable internet service around the world, especially in places where it’s hard to get or too expensive. Others include Jeff Bezos’ Amazon and OneWeb. SpaceX may start service later this year in the northern U.S. and Canada, then expand to the world’s most populated areas after 24 launches. 3170

RICHMOND, Va. – Thousands of gun-rights activists and other groups crowded the streets around Virginia’s Capitol to protest plans by the state's Democratic leadership to pass gun-control legislation. Citing credible threats of violence, Gov. Ralph Northam declared a temporary state of emergency days ahead of Monday’s rally, banning all weapons including guns from Capitol Square, where the event was set to be held. Virginia's highest court has upheld the ban. The Supreme Court issued its decision late Friday, rejecting an appeal from gun-rights groups that said the ban violated their Second Amendment right to bear arms.The court did not rule on the merits of the case, however. The justices said they did not have enough information to decide whether a lower court judge had ruled appropriately. The Southern Poverty Law Center says that threats of violence have been “rampant” online among anti-government and far-right groups.Militia groups and white supremacists were expected to mix with gun-rights activists, raising fears that the state could again see the type violence that exploded in Charlottesville in 2017.The protest came to a close Monday afternoon with no known incidents.WATCH VIDEO OF THE EVENT BELOW: 1237

Sen. Bernie Sanders was informed by U.S. intelligence officials that Russia is trying to help his presidential campaign, the Washington Post 153

Six months after a catastrophic limo crash killed 20 people in upstate New York, a son of the limo company's owner faces a litany of charges.Nauman Hussain has been indicted on 20 counts of second-degree manslaughter and 20 counts negligent homicide, Schoharie District Attorney Susan Mallery said. He is scheduled to be arraigned Wednesday.Police have described Hussain as an "operator" for Prestige Limousine Chauffer Service, which was owned by his father Shahed Hussain.A felony complaint said the younger Hussain hired driver Scott Lisinicchia, despite knowing Lisinicchia didn't have the appropriate license to drive the limo.The complaint also said Nauman Hussain knew or should have known the modified Ford Excursion had mechanical and safety deficiencies, including some that would have affected the brakes.The limo had failed inspection just a month before the October 2018 crash and "was not supposed to be on the road," New York Gov. Andrew Cuomo said.But Hussain's attorney Lee Kindlon said "Mr. Hussain is not guilty of criminal wrongdoing, and we will fight for him every step of the way." Kindlon has said Nauman Hussain had "very little involvement" in the company, handling some marketing and booking and answering the phone.How the crash happenedLisinicchia was driving 17 guests to a birthday party in upstate New York when the modified Ford Excursion plowed through a stop sign and struck a parked SUV, officials said.The driver and 17 passengers were killed, along with two pedestrians. The victims included newlyweds and four sisters.The National Transportation Safety Board issued 1648

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