字幕列表 影片播放 列印英文字幕 recently this happened capture confront SpaceX launched its crew dragon marking the first time that a commercially built crew capsule launched from American soil this is exciting all on its own but this upcoming Soyuz launch could also mark the end of an era and what could be the last time Americans are sent to space in a country other than their own expedition 5960 is expected to launch on march 14th from the balcony or cosmodrome in kazakhstan ferrying the new crew to the ISS including astronauts from October's failed abort mission the two astronauts in one cosmonaut will be joining the crew already aboard the ISS working on roughly 250 experiments to further our understanding of the human body test new technology and even try to further wrap our brains around what time means in space this latest mission will be on a Soyuz ms 12 spacecraft carrying a three-person crew alexey ovchinin of the russian space agency Roscosmos NASA astronauts Christina hammock coke and Nick Hague 4ov Keenan and Hague this is their second attempt to make it to the ISS on October 11th 2018 the pair were headed for a routine trip to the space station on a Soyuz rocket but two minutes after liftoff a problem occurred during the separation of one of the Rockets strap-on boosters forcing them to perform an emergency landing via ballistic re-entry which sounds scary and is scary but it's actually the only way astronauts used to re-enter at the beginnings of human space travel since then ovchinin and Hague have been retrained and are prepared for expedition 59 60 we got in touch with Hague currently stationed in Star City Russia and spoke to him about his feelings of heading back after only a few months well you know if you asked me a year ago if I'd be in this position I could have never imagined it so it's a little bit surreal being able to have another opportunity this quickly but I feel very fortunate for the opportunity to be able to get up there and you know finally get to doing the mission that I've been training for at NASA for the last five years expedition 5960 will be making history as they will be on board when the first Commercial Crew vehicles are scheduled to arrive at the ISS having launched from Cape Canaveral in Florida do you hasn't launched astronauts into space from its own soil since 2011 since then astronauts have been ferried to and from Earth via Russian Soyuz rockets but this agreement is due to run out by the end of 2019 now there's a chance that they may have the opportunity to buy more seats but the overall goal is to get back to launching from the US so why did the u.s. stop ferrying its astronauts to space officially named the space transportation system NASA's Space Shuttle program had its first flight on April 12th 1981 the space shuttle program was the world's first reusable rocket shuttling astronauts repairing satellites and even helping to build the ISS during its reign the program had five space shuttles that flew a total of 135 missions but by 2011 one estimate put the average cost per trip to roughly 1.5 billion dollars so after 30 years of service NASA decided to retire the program since then the US has been entirely dependent on Russia as the Soyuz is the only spacecraft available to transport crews to the ISS and they're pretty reliable the Soyuz is the longest operational manned spacecraft in history although it's expensive the u.s. currently pays 81 million dollars per seat for its astronauts two hits arrive which is why in 2014 NASA decided to spend its coin in the private sector awarding both SpaceX and Boeing with contracts to build spacecraft that could shuttle astronauts in the long term this also means that NASA has more resources available to tackle challenges like deep space exploration and getting to Mars to be ready for the task SpaceX built its crew Dragon spacecraft that sits atop a falcon 9 its first test flight dubbed demonstration 1 launched on March 2nd from Kennedy Space Center making history as the first commercially made American spacecraft and rocket to launch from the US after a day in Earth's orbit the capsule successfully docked into the ISS delivering its spacesuit sensor wearing test device named Ripley and roughly 180 kilograms of supplies it remained docked for roughly five days before making its descent back to earth splashing down into the Atlantic Ocean the other contract was awarded to Boeing who cst-100 our liner capsule is scheduled for its uncrewed test launch in April 2019 star liner is designed to be reused at least ten times within the span of six months SpaceX and Boeing are continuing tests but both have committed to manned space missions for later this year nASA has already assigned the crew that will be heading up on these historic flights and although crew dragon and star liner are built to carry seven passengers for these first operational missions they'll carry only four crew members along with roughly 100 kilograms of cargo by having different launch capabilities it provides more launch options when needing to replan an aborted launch like what happened to option and and Hague back in October this is going to make the the program much more robust by having multiple means to launch from whether it's the US whether it's Boeing or whether it's space X or or whether it's on a Soyuz we've got all these ways to deliver crews so that if we do have a problem we're more resilient and we don't have to bring down the size of the crew of the station and put a you know a damper on the the research and we can continue to move forward at the pace that we want to because at the end of the day it's also about the really cool science happening on board the ISS right now there are roughly 250 scientific experiments stationed aboard send up on previous missions from different space agency partners looking to study various aspects of life in space these experiments include how to grow food and microgravity or monitoring lightning from space that happens every second or how astronauts experience bone density loss during expeditions before heading up the astronauts get training so they're able to handle the experiments and they can even volunteer for them like the airway monitoring program sent up by European Space Agency to help study astronauts loan function on the ISS the study looks at the nitric oxide the astronauts breathe out which helps in understanding the conditions of our lungs in space monitoring nitric oxide levels helps to detect inflammatory diseases in the lungs like asthma previous crews of astronauts have volunteered for the experiment like German ESA astronaut Alexander Gerst and we also found that spaceflight triggers a little bit the reaction of the lungs that are very close to what people have when they have asthma so we can still breathe freely in space it's not really stopping us from working and living there but we can still use that little change to measure that right and we can understand it better because we are in a much more controlled environment than it's possible down here on earth for expedition 59 60 Nick Hague volunteered to be the human test subject for the experiment so the benefit is when we get to the surface of the Moon and there's dust and we know we had problems with lunar dust back in the Apollo program we're going to be able to monitor the health of the astronauts even better while they're working up there and and diagnose problems and protect us while we're exploring the moon space is not easy it's a it's a risky business it's always going to be a risky business but why do we do it we've been up there for two decades on the space station in this amazing international collaboration performing science collecting data so the scientists on the ground can learn more about our planet they can learn more about humans in our bodies and and how they behave they can learn more about the universe that surrounds us and and all of that is advancing humanity and so we accept those risks so that we can continue to move forward and continue to expand the boundaries of what we know that's it's a vital mission and we're doing it every day and I want people to when they see a launch like that I want them to connect that launch with the importance of the mission and that's just it there are so many launches happening every year so many historic moments that aren't to be missed which is why we're committed to bringing you more launch coverage than ever before that means we'll be there to talk about the next crew Dragon launch Boeing Starliner and the latest International moon missions if there's anything you'd like us to cover on future missions let us know down in the comments and as always thanks for watching seeker and I'll see you next time
B1 中級 這可能是NASA與俄羅斯的最後一次發射嗎?| 衛星發射倒計時 (Could This Be NASA’s Last Launch With Russia? | Countdown To Launch) 3 1 林宜悉 發佈於 2021 年 01 月 14 日 更多分享 分享 收藏 回報 影片單字