济南导致包皮的原因(济南左侧睾丸隐隐疼) (今日更新中)

SpaceX completed the last big test of its crew capsule before launching astronauts in the next few months, mimicking an emergency escape shortly after liftoff Sunday.No one was aboard for the wild ride in the skies above Cape Canaveral, just two mannequins. The nine-minute flight ended with the Dragon crew capsule parachuting safely into the Atlantic, after separating and speeding away from the exploding rocket.“I’m super fired up,” Elon Musk, the company’s founder and chief executive, told reporters. “It’s just going to be wonderful to get astronauts back into orbit from American soil after almost a decade of not being able to do so. That’s just super exciting.”NASA astronauts have not launched from the U.S. since the space shuttle program ended in 2011. Musk and NASA Administrator Jim Bridenstine said the next Crew Dragon could launch with a pair of NASA astronauts in the second quarter of this year — as early as April.The Falcon 9 rocket blasted off as normal, but just over a minute into its supersonic flight, the Dragon crew capsule catapulted off the top 12 miles (20 kilometers) above the Atlantic. Powerful thrusters on the capsule propelled it up and out of harm’s way, as the rocket engines deliberately shut down and the booster tumbled out of control and exploded in a giant fireball. The capsule reached an altitude of about 27 miles (44 kilometers) before parachuting into the ocean just offshore to bring the test flight to a close. Everything appeared to go well despite the choppy seas and overcast skies. Within minutes, a recovery ship was alongside the capsule.Recycled from three previous launches, the SpaceX rocket was destroyed as it burst apart in flight and slammed in pieces into the sea. SpaceX normally tries to recover its boosters to drive down launch costs, landing them upright on a floating platform or back at the launch site.NASA’s commercial crew program manager, Kathy Lueders, said the launch abort test was “our last open milestone” before allowing SpaceX to launch Doug Hurley and Robert Behnken to the International Space Station. Their launch date will depend, in part, on whether NASA decides to keep them for months at the orbiting lab, versus just a week or two. A longer mission will require more training before flight.The astronauts monitored Sunday’s flight from the firing room. Hurley said it was “pretty neat to see” the capsule aboard the recovery ship within two hours. By all early accounts, the test was successful.“We’ll see what the data show and go from there,” Hurley said. “But it certainly is a confidence builder from the standpoint if you ever got into that situation, that Dragon can get us away from the booster quickly.”The astronauts also will have access to speed before liftoff. During a launch dress rehearsal Friday, Hurley and Behnken rode in a white Tesla Model X from Kennedy Space Center’s crew quarters to the launch pad, their sleek white and black spacesuits matching the electric sports car with wing-like doors. Musk, who also runs Tesla, used the cars to get around the space center Sunday.Delayed a day by bad weather, Sunday’s launch from Kennedy brought together hundreds of SpaceX, NASA and Air Force employees on land, at sea and in the air. Tourists and locals alike packed the adjoining visitor complex and nearby beaches to see the dramatic fiery spectacle of an out-of-control rocket. Musk brought along his own family, including his brother.NASA hired SpaceX and Boeing a decade ago to transport astronauts to and from the space station for billions of dollars. Both companies struggled with technical problems, adding years of delay and forcing NASA to shell out hundreds of millions of dollars extra for Russian rocket rides.After multiple cargo deliveries for NASA, SpaceX successfully flew an enhanced crew capsule to the space station last March without anyone on board, but it exploded a month later during ground testing. The emergency escape thrusters — the kind used in Sunday’s test — had to be retooled. In all, SpaceX has tested these powerful Super Draco thrusters some 700 times.Last month, meanwhile, Boeing’s Starliner crew capsule ended up in the wrong orbit on its first test flight and had to skip the space station. The previous month, only two of the Starliner’s three parachutes deployed during a launch abort test.Lueders said it’s too soon to know whether Boeing will need to send another Starliner to the space station without a crew or go straight to launching astronauts later this year. An investigation team is still looking into why the Starliner’s automated timer was off by 11 hours during the December test flight.The importance of launch escape was demonstrated in 2017 when two astronauts, an American and a Russian, were pulled to safety during a failed launch from Kazakhstan. They experienced up to seven times the force of gravity during the abort, but walked away from the accident.The SpaceX in-flight abort system, Musk pointed out, should be gentler for the crew and is good from the launch pad all the way to orbit.Musk said the Dragon’s escape system should work — in principle — even if the capsule is still attached when the rocket erupts in a fireball. He said that could look like “something out of ‘Star Wars’” with the capsule flying right out of a fireball.“Obviously we want to avoid doing that,” he quickly added, taking note of all the NASA personnel around him.___The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content. 5629

SOUTH BEND, Ind. – Pete Buttigieg, who rose from being a small-town Midwestern mayor to a barrier-breaking, top-tier candidate for the Democratic presidential nomination, has ended his campaign.Three people with knowledge of Buttigieg’s decision told The Associated Press he began informing campaign staff on Sunday. They were not authorized to speak publicly and requested anonymity.Buttigieg formally announced he was bowing out of the race during a speech in South Bend, Indiana, the city he led.WATCH BUTTIGIEG'S SPEECH BELOW: 543

Since the year began, 47 law enforcement officers across the US have been shot and killed in the line of duty, including a police officer in California making a traffic stop on the morning after Christmas.The parameters CNN followed in this count are:The officer was fatally shot this yearThe officer was on duty at the time of the shooting"The tragic deaths ... (are) a stark reminder of the dangers our law enforcement professionals face each and every day while protecting and serving our communities," 518

Some Florida residents are leaving their cars at gas stations because fuel is running out before Hurricane Dorian arrives in the state.Miami resident Marion Wilkinson Scott told CNN on Friday he saw 12 cars that were left Thursday night at a Chevron on 152nd Street, five at a Mobile station in the Hammocks and two at another Chevron across from his house.He posted on Twitter a picture of one of those cars with a note on the dash: "I live close by. My car is out of gas. Please call me when more arrives!" A phone number was included."My friends have given similar reports from various places in the city. I think a lot of people were in denial about this storm. Now they are a bit panicky," Scott told CNN.He said he tried to top off his own tank at all those stations Thursday but had no luck."There isn't any. We've kept it topped off every night since last week (because Irma was a similar scenario for fuel scarcity two years ago). That ended last night when the stations all ran out of gasoline," he said."As a result, we have one unused car with a tank and another with half a tank. I hope it's enough to last til Tuesday next week. The possibilities of landfall are so broad that the entire eastern seaboard of Florida has made a run on gas simultaneously."Scott says he's apprehensive about the storm."We stocked up last week when it was a tropical storm and have reservations for a hurricane-proof hotel with a generator in Bonita Springs," he said."I have two little girls. I don't need for them to be in the heat once the electricity goes. We have shutters on our home. I'm glad we filled or tanks last week and have provisions. It is difficult to heed warnings when there is no gas at the station and no water in the market. Our tub will be filled."He says his daughters have already excitedly packed their favorite toys in backpacks for the trip across state.They're taking other measures, too. "We are people of faith. We went to the church to pray," Scott said.Other parts of Miami also have been affected by the gas shortage.The Shell on 41st Street, a main thoroughfare through Miami Beach, ran out of gas at about 10 p.m. Thursday, according to Harry, an employee who declined to give his last name. Asked when they'd be getting a delivery, he said, "We have no idea. The distributor has no idea."A few blocks south, there was a slightly chaotic scene Friday morning at the Valero on 23rd Street, where a dozen cars lined up for gas while the station still had it. Mathew Cabral filled about a dozen canisters with diesel, but not for his own use. He works for a rental company that stocks Miami Beach with chairs, cabanas and other tourist items and he and his coworkers were spending the morning getting their inventory off the beach.When asked if he was nervous about the incoming storm, he said, "No, not really, not at Category 3. But if it's a Category 4, well, that's a bit different."People in other parts of Florida posted videos on social media of long lines of cars waiting to get into gas stations.Dango Kumwenda, 24, who lives in Windermere, Florida, told CNN he waited in line for almost two hours to get gas at a Wawa station in Winter Garden."This was probably the only gas station within like a 10-mile radius with gas," he told CNN.Florida Gov. Ron DeSantis acknowledged that there is a fuel shortage across the state as Hurricane Dorian approaches.But steps are being taken to fix this issue, he said."We, in the emergency declaration, waived service and truck rates for fuel trucks so we can increase capacity for fuel being brought in. We're also going to be starting today implementing Florida Highway Patrol escorts for fuel trucks so we can increase fueling in critical parts of the state," DeSantis said during a Friday briefing. 3788

Presidential candidate Beto O'Rourke reiterated his support for a mandatory gun-buyback program of assault-style rifles on Thursday and said, "Hell, yes, we're going to take your AR-15, your AK-47.""We're not going to allow it to be used against our fellow Americans anymore," the former Texas congressman said during the third Democratic presidential debate, hosted by ABC News."If the high-impact, high-velocity round, when it hits your body, shreds everything inside of your body because it was designed to do that so that you would bleed to death on a battlefield ... when we see that being used against children," O'Rourke said. He recalled talking to a woman in Odessa, Texas, who had watched her 15-year-old daughter bleed to death after she was shot by a man wielding an AR-15 late last month.O'Rourke's comments come in the wake of a string of mass shootings in the United States, including in his hometown of El Paso, where 22 people were gunned down at a Walmart in August. O'Rourke unveiled a proposal weeks after that shooting calling for a national gun registry, a nationwide gun licensing system and the mandatory buyback of assault-style rifles as part of his plan to curb gun violence and the rise of white nationalism.He received praise from his fellow Democratic contenders on Thursday night for his actions following the shooting in El Paso."The way he handled what happened in his hometown -- to look in the eyes," former Vice President Joe Biden said.Fellow Texan Julián Castro praised O'Rourke for "how well he has spoken to the passion and the frustration and the sadness" after the shooting."And Beto, God love you for standing in the middle of that tragedy," said Sen. Kamala Harris of California.Sen. Amy Klobuchar of Minnesota said, "I so appreciate what the congressman's been doing."Sen. Cory Booker of New Jersey needled O'Rourke later, saying he was sorry it had taken the El Paso shooting for O'Rourke to embrace the position Booker already held, backing a mandatory buyback and national registration.O'Rourke's support for gun licensing is a reversal from May, when he was asked about a similar proposal from Booker and said it "may be too far." 2191

来源：资阳报