Four-man Space X Crew Dragon spacecraft wraps up six-month stay in orbit_我的网站
A | 最近，“燃油车集体降价”的话题在各个平台都引发了热议。一边是新车价格节节走低，多个品牌出现明显价格下调；另一边是二手油车价格跟着回落，不少车主发现自己刚买不久的车，转手价值缩水了不少。这种价格变化，让观望准备买车的人看到了机会，也让不少新车主心里不是滋味。 价格波动本是市场常事，但落到具体消费者身上，就是实打实的用车成本。面对价格起伏，买车、卖车、用车时有哪些坑要留意？又该如何维护自己的权益？ 价格变动，车主可能遇到三类情况 一是新车刚买就遇降价，心里难免落差。 Two NASA astronauts, a Russian cosmonaut and a United Arab Emirates astronaut undocked from the International Space Station Sunday and headed for an overnight splashdown off Florida's East Coast early Monday to wrap up a six-month stay in orbit.Strapped into their SpaceX Crew Dragon "Endeavour" spacecraft, Crew-6 commander Stephen Bowen, pilot Woody Hoburg, cosmonaut Andrey Fedyaev and UAE crewmate Sultan Alneyadi undocked from the station's forward Harmony module at 7:05 a.m. ET to kick off a 17-hour flight back to Earth.Crew-6 (clockwise from top): Pilot Woody Hoburg, cosmonaut Andrey Fedyaev, commander Stephen Bowen and United Arab Emirates astronaut Sultan Alneyadi. NASA "Before we get busy, we just want to say wow!" mission control radioed a few minutes before undocking. "Can you believe it's already time to leave? We can't. ... You've done an incredible job, and to say it's been a pleasure to support you guys in this mission would be an understatement." "Thank you very much," Bowen replied. "It's been a real pleasure and an honor to be here for this expedition. We're coming up on 23 years of continuous occupation of the International Space Station, which is absolutely amazing. Just a real privilege to be a part of it."If all goes well, the Crew Dragon will execute a 16-minute de-orbit thruster firing starting at 11:24 p.m. ET. The "burn" will slow the spacecraft by 252 mph, just enough to drop it back into the lower atmosphere on a southwest-to-northeast trajectory.
Splashdown in the Atlantic Ocean east of Jacksonville, Florida, is expected at 12:17 a.m. ET Monday."We're definitely looking forward to our return, and for me as a rookie flyer, the final part of that unique life experience (of) decelerating from 17,500 miles an hour down to hopefully a great splashdown," Hoburg said last week.A SpaceX team will be standing by to pull the spacecraft aboard a company recovery ship and assist the crew members getting out of the cabin as they begin readjusting to the unfamiliar tug of gravity after a half year in weightlessness.Before departing the space station, Bowen, a former submariner, said he most looked forward to "the nice ocean air and peaceful calm seas. That'll be really nice to get back to."
Hoburg said he was looking forward to a "real shower." Alneyadi said he couldn't wait to rejoin friends and family, along with enjoying "a real hot cup of coffee." As for Fedyaev, "I think my dream is a bed for good sleeping. I can lay on one side. Another side. My back. Sleeping!"After initial medical checks aboard the recovery ship, all four fliers will be flown to shore by helicopter. A NASA jet then will carry them back to Houston and the Johnson Space Center for debriefing and reunions with friends and family.Left behind in orbit were three Soyuz crew members -- station commander Sergey Prokopyev, Dmitri Petelin and NASA astronaut Frank Rubio -- and four Crew Dragon fliers launched August 26 to replace Bowen and company: Crew-7 commander Jasmin Moghbeli, European Space Agency astronaut Andreas Mogensen, Japanese astronaut Satoshi Furukawa and cosmonaut Konstantin Borisov.NASA astronaut Frank Rubio, upper left, Soyuz commander Sergey Prokopyev, upper right, and flight engineer Dmitri Petelin will close out an extended yearlong mission when they return to Earth on September 27. Rubio will set a new record for the longest single flight by an American astronaut. NASA Prokopyev, Petelin and Rubio were launched to the station last September and are wrapping up a marathon 371-day mission.They originally planned to spend six months in space, but their Soyuz ferry ship was disabled by a major coolant leak last December. The Russians opted to send up a replacement spacecraft, and the crew's mission was extended an additional six months.A fresh Soyuz crew — commander Oleg Kononenko, Nikolai Chub and NASA astronaut Loral O'Hara — is scheduled for launch from the Baikonur Cosmodrome in Kazakhstan on Sept.15.Prokopyev, Petelin and Rubio will undock and return to Earth 12 days later. In so doing, Rubio will set a new U.S. record for the longest single spaceflight by an American astronaut.
Launched atop a SpaceX Falcon 9 rocket on March 2, the Crew-6 fliers will have spent 185 days and 22 hours off planet, circling the globe 2,976 times while traveling 78.9 million miles through space. At splashdown, Bowen, the only space veteran on the crew, will have logged 227 days in space across four missions.Over the course of their mission, the Crew-6 astronauts welcomed seven visiting vehicles, including two unpiloted Cargo Dragon spacecraft, two Russian Progress supply ships, a Northrop Grumman Cygnus cargo carrier and two piloted Crew Dragons.They also carried out three spacewalks. Bowen and Hoburg ventured outside twice to install new roll-out solar blankets and Alneyadi joined Bowen for a third excursion to retrieve a failed antenna package and to carry out other maintenance."It's certainly been the experience of a lifetime, and a real honor to get to spend six months, six incredibly short-feeling months, living and working aboard this incredible orbiting outpost," Hoburg said before departing the station. "I think we got a lot done."
Bill Harwood has been covering the U.S. space program full-time since 1984, first as Cape Canaveral bureau chief for United Press International and now as a consultant for CBS News. He covered 129 space shuttle missions, every interplanetary flight since Voyager 2's flyby of Neptune and scores of commercial and military launches. Based at the Kennedy Space Center in Florida, Harwood is a devoted amateur astronomer and co-author of "Comm Check: The Final Flight of Shuttle Columbia."
B | 这多是市场整体调整叠加促销，属于正常价格变动，但购车时不妨关注品牌是否提供价格保护或保价政策。二是二手车残值缩水，卖掉会亏，可转念一想，换个角度看也是入手二手车的低点，关键要会挑。三是个别4S店、经销商在销售环节设置捆绑、加价等门槛，这类就需要多留个心眼。 想在变动期少吃亏，买车前最好把功课做足：多对比几家报价，把裸车价、保险、上牌、税费问清楚；合同里的条款逐条看，尤其关注价保、退订这些约定；对车辆的新车指导价和近期成交价心中有数，别被“限时优惠”冲昏头。
C | 除了看单款车的价格，政策因素同样值得留个心眼。目前新能源车在购置税环节仍有阶段性优惠，不少地方还配套了置换补贴，这些都直接影响实际购车成本。如果本就有购车计划，可以把税费和补贴一起算进总账里再作决定，既能省钱，也能减少因市场价格浮动带来的落差感。
D | 遇到买车、售后问题，怎么维权？ 真遇到销售陷阱、质量问题或售后纠纷，处理路径是清晰的。先和4S店或经销商沟通协商，这是成本最低的一步；协商不成的，可以向12315投诉，涉及汽车质量、虚假宣传、合同纠纷都能反映；如果问题牵涉车辆缺陷，还可以向市场监管部门的缺陷产品相关机构提交线索，推动企业重视。 除了官方渠道，互联网投诉平台 【下载黑猫投诉客户端】也能提供帮助。以黑猫投诉为例，消费者可通过网站、APP、微信小程序上传购车合同、发票、维修记录、检测报告等证据，平台转达给相关车企或经销商协调处理，进展实时可见。黑猫投诉平台还是全国汽车产品缺陷线索监测协作网的成员单位，会向有关部门汇总上报产品质量缺陷相关线索，这些数据也有助于推动行业关注产品质量问题。链接：https：//tousu.sina.com.cn/。
E | 买卖二手油车，把握几个关键点 价格走低，对计划买二手油车的朋友反而是窗口。但一定要注意几点：查清车辆的维修、保养及出险记录，判断是否事故车、泡水车；尽量选择车况透明、信誉良好的渠道；实地验车或找第三方检测，别被低价冲昏了头。同样，卖车时多找几家中介比价，了解行情再出手，避免被压价。 说到底，无论是等着入手降价的新车，还是想淘一辆优惠的二手油车，核心都是先想清楚自己的需求：更看重驾驶品质、用车成本，还是补能是否方便。把账算明白再出手，才不容易受一时热闹的行情影响，也少留后悔的余地。 价格有涨有落是市场常态，掌握信息、理性决策才是关键。无论买车还是用车，多花点心思做功课、把维权渠道了解清楚，才能在大幅波动的市场里占据主动，让每一分钱都花得明白。责任编辑：孙晓明。
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