济南男科预约医院(济南男科医院早射) (今日更新中)

After almost two years circling an ancient asteroid hundreds of millions of miles away, a NASA spacecraft this week will attempt to descend to the treacherous, boulder-packed surface and snatch a handful of rubble.The drama unfolds Tuesday as the U.S. takes its first crack at collecting asteroid samples for return to Earth, a feat accomplished so far only by Japan.Brimming with names inspired by Egyptian mythology, the Osiris-Rex mission is looking to bring back at least 2 ounces (60 grams) worth of asteroid Bennu, the biggest otherworldly haul from beyond the moon.The van-sized spacecraft is aiming for the relatively flat middle of a tennis court-sized crater named Nightingale — a spot comparable to a few parking places here on Earth. Boulders as big as buildings loom over the targeted touchdown zone.“So for some perspective, the next time you park your car in front of your house or in front of a coffee shop and walk inside, think about the challenge of navigating Osiris-Rex into one of these spots from 200 million miles away,” said NASA’s deputy project manager Mike Moreau.Once it drops out of its half-mile-high (0.75 kilometer-high) orbit around Bennu, the spacecraft will take a deliberate four hours to make it all the way down, to just above the surface.Then the action cranks up when Osiris-Rex’s 11-foot (3.4-meter) arm reaches out and touches Bennu. Contact should last five to 10 seconds, just long enough to shoot out pressurized nitrogen gas and suck up the churned dirt and gravel. Programmed in advance, the spacecraft will operate autonomously during the unprecedented touch-and-go maneuver. With an 18-minute lag in radio communication each way, ground controllers for spacecraft builder Lockheed Martin near Denver can’t intervene.If the first attempt doesn’t work, Osiris-Rex can try again. Any collected samples won’t reach Earth until 2023.While NASA has brought back comet dust and solar wind particles, it’s never attempted to sample one of the nearly 1 million known asteroids lurking in our solar system until now. Japan, meanwhile, expects to get samples from asteroid Ryugu in December — in the milligrams at most — 10 years after bringing back specks from asteroid Itokawa.Bennu is an asteroid picker’s paradise.The big, black, roundish, carbon-rich space rock — taller than New York’s Empire State Building — was around when our solar system was forming 4.5 billion years ago. Scientists consider it a time capsule full of pristine building blocks that could help explain how life formed on Earth and possibly elsewhere.“This is all about understanding our origins,” said the mission’s principal scientist, Dante Lauretta of the University of Arizona.There also are selfish reasons for getting to know Bennu better.The solar-orbiting asteroid, which swings by Earth every six years, could take aim at us late in the next century. NASA puts the odds of an impact at 1-in-2,700. The more scientists know about potentially menacing asteroids like Bennu, the safer Earth will be.When Osiris-Rex blasted off in 2016 on the more than 0 million mission, scientists envisioned sandy stretches at Bennu. So the spacecraft was designed to ingest small pebbles less than an inch (2 centimeters) across.Scientists were stunned to find massive rocks and chunky gravel all over the place when the spacecraft arrived in 2018. And pebbles were occasionally seen shooting off the asteroid, falling back and sometimes ricocheting off again in a cosmic game of ping-pong.With so much rough terrain, engineers scrambled to aim for a tighter spot than originally anticipated. Nightingale Crater, the prime target, appears to have the biggest abundance of fine grains, but boulders still abound, including one dubbed Mount Doom.Then COVID-19 struck.The team fell behind and bumped the second and final touch-and-go dress rehearsal for the spacecraft to August. That pushed the sample grab to October.“Returning a sample is hard,” said NASA’s science mission chief, Thomas Zurbuchen. “The COVID made it even harder.”Osiris-Rex has three bottles of nitrogen gas, which means it can touch down three times — no more.The spacecraft automatically will back away if it encounters unexpected hazards like big rocks that could cause it to tip over. And there’s a chance it will touch down safely, but fail to collect enough rubble.In either case, the spacecraft would return to orbit around Bennu and try again in January at another location.With the first try finally here, Lauretta is worried, nervous, excited “and confident we have done everything possible to ensure a safe sampling.”___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. 4807

Almost two dozen people became trapped when a storm knocked over a large tree onto a detached garage, which collapsed. The victims were attending a child's birthday party, and had gone inside the garage when the storm started, according to Anne Arundel County Fire Department."It literally sounded like a train coming down the tracks and I looked out the front door and I could see a funnel," said neighbor Dawn Redloff.Redloff describes the severe and sudden storm that hit her neighborhood in Pasadena Sunday afternoon, near Baltimore. Winds knocked down trees, power lines and blew out her front door and window.But nothing was as bad as her neighbor's home."It was heartbreaking," said Redloff.The Anne Arundel County Fire Department officials said a large tree fell on a detached garage during a child’s birthday party, injuring 19 and requiring major rescues."The guys were unreal, cutting the building apart, getting people out of there," said Redloff.When crews arrived, they found six people still trapped inside, all were removed within 45 minutes.According to the county, 19 adults and two children were injured and taken to four area hospitals. The ages of the victims range from 2 to 78 years old. 1219

AKRON, Ohio — One couple is accusing a haunted house in Akron, Ohio of subjecting patrons to a mock rape scene without asking their permission or having them sign a waiver."There was a man in a mask standing over my boyfriend, my boyfriend was on the edge and he was being pushed down," said Sarah Lelonek."She comes over and yells, 'Stop, what are you doing? That's my boyfriend,' " said Lelonek's boyfriend Ryan Carr. "'Not anymore, he's mine now I'm going to rape him' and then he started thrusting against me."The couple says this all went down at the Akron Fright Fest, which is housed on the Kim Tam Park property. They say this is not the special haunted house where you had to sign a waiver to enter, although they do offer a haunted house like that on the property. Lelonek and Carr aren't the only ones complaining about this rape scenario.One Facebook user wrote "It was 100 percent a rape scene," and someone else said, "They did have a mock rape scene in one of the houses."A different viewer sent WEWS television station reporters a private Facebook message and wrote, "They grabbed my ankles and shins and pulled my legs apart and was thrusting while telling me to scream papa."WEWS reached out to the haunted house manager over Facebook, but he did not respond to the message. The owner of the property said he would have the manager contact us. That same manager who did not respond wrote online "the issue has been resolved.""In all the years I've been going to haunted houses, I have never seen anything like that, ever," said Lelonek. 1597

After terrorists struck the World Trade Center on September 11, 2001, a New York ferry captain who later became a city firefighter helped evacuate hundreds of people from Lower Manhattan.He was Thomas Phelan, 45, one of the many heroes who came to the city's rescue after the attack. Phelan died on Friday, authorities said, one of the thousands of victims of cancer linked to the 9/11 attack.Phelan worked for Circle Line Statue of Liberty ferry cruises when the twin towers were hit and helped ferry people from Lower Manhattan, FDNY spokesman Jim Long confirmed. In 2003, Phelan joined the fire department as a firefighter and eventually was promoted to marine pilot, Long said. 689

All week, the climbing Mega Millions and Powerball jackpots have been awakening the frivolous dreamers inside of us. Come on, who could resist entertaining some "what ifs" when the money at stake is over a billion dollars?To recap, no one's won the big Powerball or Mega Millions payout for a long time, so now the jackpots are sinfully high. The Powerball pot is 0 million, and the top Mega Millions prize is a cool Dr. Evil-approved billion.Granted, those numbers get pared down a LOT once cash value calculations and good old Uncle Sam get a hold of the winnings. But still, it's an obscene amount of money. 624

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