凉山肢乏力无精打采(合肥套体检医院) (今日更新中)

CAPE CANAVERAL, Fla. (AP) — The first astronauts to ride a SpaceX capsule into orbit are headed toward a splashdown Sunday in the Gulf of Mexico to close out their two-month test flight.It will be the first splashdown in 45 years for NASA astronauts and the first return in the gulf. Florida's Atlantic coast is starting to see the effects of Tropical Storm Isaias. But waves and wind are calm near Pensacola in the Florida Panhandle.Test pilots Doug Hurley and Bob Behnken departed the International Space Station on Saturday night. They awoke to a recording of their young children urging them to “rise and shine.” 624

CAPE CANAVERAL, Fla. (AP) — The spacecraft team that brought us close-ups of Pluto will ring in the new year by exploring an even more distant and mysterious world.NASA's New Horizons spacecraft will zip past the scrawny, icy object nicknamed Ultima Thule (TOO-lee) soon after the stroke of midnight.One billion miles beyond Pluto and an astounding 4 billion miles from Earth (1.6 billion kilometers and 6.4 billion kilometers), Ultima Thule will be the farthest world ever explored by humankind. That's what makes this deep-freeze target so enticing; it's a preserved relic dating all the way back to our solar system's origin 4.5 billion years ago. No spacecraft has visited anything so primitive."What could be more exciting than that?" said project scientist Hal Weaver of Johns Hopkins University, part of the New Horizons team.Lead scientist Alan Stern of Southwest Research Institute in Boulder, Colorado, expects the New Year's encounter to be riskier and more difficult than the rendezvous with Pluto: The spacecraft is older, the target is smaller, the flyby is closer and the distance from us is greater.NEW HORIZONSNASA launched the spacecraft in 2006; it's about the size of a baby grand piano. It flew past Pluto in 2015, providing the first close-up views of the dwarf planet. With the wildly successful flyby behind them, mission planners won an extension from NASA and set their sights on a destination deep inside the Kuiper Belt. As distant as it is, Pluto is barely in the Kuiper Belt, the so-called Twilight Zone stretching beyond Neptune. Ultima Thule is in the Twilight Zone's heart.ULTIMA THULEThis Kuiper Belt object was discovered by the Hubble Space Telescope in 2014. Officially known as 2014 MU69, it got the nickname Ultima Thule in an online vote. In classic and medieval literature, Thule was the most distant, northernmost place beyond the known world. When New Horizons first glimpsed the rocky iceball in August it was just a dot. Good close-up pictures should be available the day after the flyby.ARE WE THERE YET?New Horizons will make its closest approach in the wee hours of Jan. 1 — 12:33 a.m. EST. The spacecraft will zoom within 2,200 miles (3,500 kilometers) of Ultima Thule, its seven science instruments going full blast. The coast should be clear: Scientists have yet to find any rings or moons around it that could batter the spacecraft. New Horizons hurtles through space at 31,500 mph (50,700 kph), and even something as minuscule as a grain of rice could demolish it. "There's some danger and some suspense," Stern said at a fall meeting of astronomers. It will take about 10 hours to get confirmation that the spacecraft completed — and survived — the encounter.POSSIBLY TWINSScientists speculate Ultima Thule could be two objects closely orbiting one another. If a solo act, it's likely 20 miles (32 kilometers) long at most. Envision a baked potato. "Cucumber, whatever. Pick your favorite vegetable," said astronomer Carey Lisse of Johns Hopkins. It could even be two bodies connected by a neck. If twins, each could be 9 miles to 12 miles (15 kilometers to 20 kilometers) in diameter.MAPPING MISSONScientists will map Ultima Thule every possible way. They anticipate impact craters, possibly also pits and sinkholes, but its surface also could prove to be smooth. As for color, Ultima Thule should be darker than coal, burned by eons of cosmic rays, with a reddish hue. Nothing is certain, though, including its orbit, so big that it takes almost 300 of our Earth years to circle the sun. Scientists say they know just enough about the orbit to intercept it.COMPARING FLYBYSNew Horizons will get considerably closer to Ultima Thule than it did to Pluto: 2,220 miles versus 7,770 miles (3,500 kilometers vs. 12,500 kilometers). At the same time, Ultima Thule is 100 times smaller than Pluto and therefore harder to track, making everything more challenging. It took 4 ? hours, each way, for flight controllers at Johns Hopkins' Applied Physics Lab in Laurel, Maryland, to get a message to or from New Horizons at Pluto. Compare that with more than six hours at Ultima Thule.WHAT'S NEXTIt will take almost two years for New Horizons to beam back all its data on Ultima Thule. A flyby of an even more distant world could be in the offing in the 2020s, if NASA approves another mission extension and the spacecraft remains healthy. At the very least, the nuclear-powered New Horizons will continue to observe objects from afar, as it pushes deeper into the Kuiper Belt. There are countless objects out there, waiting to be explored. 4591

CHICAGO, Ill. – McDonald’s says it’s giving away 10,000 free McRibs to fans who show off their clean-shaven face or smooth skin.To claim a free sandwich, McDonald’s says you must post a photo of your cleanly-shaven or baby-smooth face on your public Twitter or Instagram profile, using #Shave4McRibSweepstakes and tag @mcdonalds. Stories do not count.The first 10,000 entries will receive a code for a free McRib, available via McDelivery with Uber Eats, while supplies last. The chain says anyone can participate, “from your brother to your mother, sister-in-law or cousin’s roommate.”McDonald’s says the promotion began Monday and it’s in honor of the return of the McRib on Wednesday, as well as the end of No-Shave November, a month-long challenge where participants are asked to put down their razors and “get hairy" in the name of cancer awareness.No-Shave November is also a nonprofit devoted to fundraising for cancer research, prevention and education. McDonalds is collaborating with the organization and will make a donation to the charity’s cancer initiatives using the profits from McRibs on Wednesday.“Our bearded fans know… facial hair and the McRib just don’t mix—believe me, I’ve tried,” said Vice President of U.S. Communications, David Tovar. “With the nationwide return of the McRib, we’re helping fans enjoy every delectable moment by encouraging them to shave for a chance to win a free McRib. And we’re excited this year to partner with No-Shave November, a charity that knows a thing or two about facial hair.”“We’re thrilled McDonald’s is supporting this important cause, getting both the bearded and the non-bearded involved beyond November simply by purchasing a McRib,” said Senior Executive Director of No-Shave November, Monica Hill. 1771

CARLSBAD, Calif. (KGTV) - After hundreds of signs and fences along the trails at the Carlsbad Ecological Reserve are ripped from the ground, Fish and Wildlife is now setting up a specialized enforcement team. Secret cameras set up around the 500 acre reserve caught dozens of bikers ripping up signs, cutting fence wire and vandalizing property.Fish and Wildlife representative Peter Tira told 10News this is nothing new."We're not dealing with recreational mountain bikers, we're dealing with folks who disregard the law and believe the law doesn't apply to them," said Tira.Starting Saturday, April 6, Fish and Wildlife enforcement officers will hand out citations to all bikers who are caught riding the trails. Each citation comes with a 0 fine. "We've installed about 500 signs on this property almost all of which have been taken down or vandalized. On each of the signs it says 'No Bicycles'," said Tira.However, many mountain bikers who showed up to the trails Wednesday told 10News this is a popular spot for many in the Carlsbad area. Ivan Sekanovich comes to ride these trails at least once a week and is disappointed that Fish and Wildlife are letting the actions of a small group of bikers ruin it for the rest of them."For the most part, people know where they're supposed to hike and the bikers know where to bike," Sekanovich said. 1358

BURBANK, Calif. (AP) — Traffic was backed up for miles for thousands of drivers Friday night on a busy Los Angeles-area freeway after a chase that lasted well over an hour and saw the driver repeatedly back into police cruisers.At one point after backing into a cruiser, the man gestured from his window with what appeared to be a knife.The man drove onto Interstate 5 in Burbank the wrong way, eventually passed a police barrier and rammed into several cars before stopping.Police evacuated drivers from their cars while they had their guns trained on the car. The driver eventually got out. It appeared that officers used a stun gun on him, prompting him to get back into the car.A standoff pursued and eventually ended after the man got out of the car, laid down for a while and tried to run away. He was arrested. 825

来源：资阳报