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geschrieben von: zhoum123 (IP-Adresse bekannt)
Datum: 10. December 2018 09:19

" BEIJING Jim Palmer Orioles Jersey , Nov. 1 (Xinhua) -- China succeeded Saturday in the world's first mission to the Moon and back in some 40 years, becoming the third nation to do so after the former Soviet Union and the United States. The test lunar orbiter, nicknamed ""Xiaofei"" on Chinese social networks, landed in Siziwang Banner of China's Inner Mongolia Autonomous Region early Saturday morning. Search teams have already recovered the orbiter at the designated landing area, about 500 kilometers away from Beijing. The last documented mission of this kind was by the Soviet Union in the 1970s. Launched Friday last week, the orbiter traversed 840 Frank Robinson Orioles Jersey ,000 kilometers on its eight-day mission that saw it round the far side of the Moon and take some incredible pictures of Earth and Moon together. The re-entry process began at around 6:13 a.m. Saturday morning, with the orbiter approaching Earth at a velocity of about 11.2 kilometers per second. The high speed led to hefty friction between the orbiter and air and high temperatures on the craft's exterior, generating an ion sheath that cut off contact between ground command and the orbiter. To help it slow down, the craft is designed to ""bounce"" off the edge of the atmosphere, before re-entering again. The process has been compared to a stone skipping across water, and can shorten the ""braking distance"" for the orbiter Darren O'Day Orioles Jersey , according to Zhou Jianliang, chief engineer with the Beijing Aerospace Command and Control Center. ""Really, this is like braking a car,"" said Zhou, ""The faster you drive, the longer the distance you need to bring the car to a complete stop."" The ""bounce"" was one of the biggest challenges of the mission Zach Britton Orioles Jersey , because the craft must enter the atmosphere at a very precise angle. An error of 0.2 degrees would have rendered the mission a failure. Wu Yanhua, vice director of China's State Administration of Science, Technology and Industry for National Defense, said the successful test mission has gathered a lot of experimental data and laid a solid foundation for future missions.` PAVING WAY FOR NEW PROBE The eight-day program is a test run for the final chapter of China's three-step--orbiting, landing and finally returning--lunar program. ""Xiaofei"" is obtaining data and validating re-entry technology such as the heat shield and trajectory design for a future landing on the moon by Chang'e-5. Earlier reports said Chang'e-5 will be launched around 2017. The goal is to collect samples from the Moon and return to Earth. If successful, China will become the third nation to do so. Calling ""Xiaofei"" a pathfinder for Chang'e-5 Mark Trumbo Orioles Jersey , Zhou Jianliang said the data acquired by the lunar orbiter will optimize technology for Chang'e-5. Hao Xifan, deputy chief of China's third phase lunar exploration program, also said the mission validated ground support capacities, craft landing technology and recoverable spacecraft technology. According to Wu Weiren, chief designer of China's lunar exploration program, Chang'e-5 is expected to collect a 2-kg sample from two meters under the Moon's surface and bring it home. Aside from the high-speed re-entry Joey Rickard Orioles Jersey , major technological challenges for the craft center on surface sampling, taking off from the Moon, and lunar orbit rendezvous, Wu said. READY TO MAKE HISTORY, AGAIN China launched a pair of orbiting lunar probes and last year landed a craft on the moon with a rover on board. Saturday's success is another step forward for China's ambition that could eventually land a Chinese citizen there. Few countries can rival China's space program although China never intended to participate in any ""space race"". In an earlier interview with Xinhua, Wu Weiren said lunar probe technology and software could be of great economic value if adapted for commercial use. Commercial gains aside Chris Davis Orioles Jersey , the space program is already a marker of China's global stature and technical expertise. The Chang'e lunar probes - named after a goddess who took her pet Yutu, or jade rabbit, to the moon - are a symbol of great national pride. The country sent its first astronaut into space in 2003, becoming the third nation after Russia and the U.S. to achieve manned space travel independently. In 2008, astronauts aboard the Shenzhou-7 made China's first space walk. There are plans for a permanent space station, expected to be set up around 2022. The Chang'e-1 and Chang'e-2 missions in 2007 and 2010 respectively Manny Machado Orioles Jersey , capped the orbital phase of the three step project. Chang'e-1 crashed onto the Moon's surface at the end of its mission, and Chang'e-2 was sent into deep space to become China's first man-made asteroid. The ongoing second phase saw Chang'e-3 soft land on the moon carrying moon rover Yutu in December 2013. Chang'e-4 was a backup for Chang'e-3 and has not been deployed. In the meantime, Yutu has entered its 11th dormancy earlier October, although its functions have degraded considerably after it encountered control issues in January this year. Experts had feared that it might never function again, but Yutu has stubbornly managed to wake up from its sleep mode ever since. None of those missions were intended to return to Earth and this has pushed the 2017 mission further into spotlight. ""The Chang'e-5 mission will be yet another historic moment for China's lunar program,"" Wu said. Researchers retrieve the return capsule of China's unmanned lunar orbiter in the central region of north China's Inner Mongolia Autonomous Region Adam Jones Orioles Jersey , Nov. 1, 2014. Return capsule of China's test lunar orbiter landed successfully early Saturday morning in north China's Inner Mongolia Autonomous Region, according to the Beijing Aerospace Control Center. (Xinhua) Researchers retrieve the return capsule of China's unmanned lunar orbiter in the central region of north China's Inner Mongolia Autonomous Region, Nov. 1, 2014. Return capsule of China's test lunar orbiter landed successfully early Saturday morning in north China's Inner Mongolia Auton<. NHL Jerseys Cheap Cheap Jerseys From China Cheap NFL Jerseys Free Shipping Wholesale Soccer Jerseys China Wholesale NHL Jerseys From China Wholesale NBA Jerseys From China Wholesale MLB Jerseys Free Shipping Wholesale NCAA Jerseys From China Wholesale Nike NFL Jerseys Wholesale NCAA Youth Jerseys


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Datum: 03. January 2019 04:05

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