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Private Spacecraft Ready for Launch to ISS
An animation1 shows what space station partner nations and SpaceX hope to see on launch day. The Falcon2 9 rocket, carrying its Dragon capsule, will launch from Cape3 Canaveral in Florida. The cargo4-carrying space capsule will separate from the rocket and begin its day-long journey toward the International Space Station.
SpaceX officials caution that many things can go wrong with such complex new technologies. The Dragon needs to meet up with an orbiting lab that is zooming5 around the Earth every 90 minutes, SpaceX CEO Elon Musk6 explained at a NASA news briefing in mid-April.
"So you've got to launch up there, you've got to rendezvous7 and be tracking the space station to within inches really, and this is something that is going 12 times faster than a bullet from an assault rifle. So it's hard," Musk admitted.
If Dragon's systems and sensors8 check out, the station crew will capture the capsule with the station's robotic arm.
ISS astronauts have plenty of supplies, so there won't be an issue if Dragon - essentially9 a robotic spaceship - is not able to dock.
"It's not as though there is somebody flying it with a joystick or that there is somebody on board who can make real-time corrections," noted10 Musk. "Dragon is making decisions all the time to optimize11 the probability of success, so there's a lot of intelligence on board the spacecraft."
NASA Administrator12 Charlie Bolden is optimistic.
"If all goes well, SpaceX will launch Dragon and they'll rendezvous with the station and be berthed13 in a matter of days,: he said. " And that will be the beginning of a totally new era, an era of private access to low-Earth orbit, the International Space Station and other destinations there."
NASA used its space shuttles to bring cargo to the ISS before it retired14 the shuttle fleet last year. The U.S. space agency is now investing in private companies to handle low-Earth orbit transportation, and it has invested $381 million in SpaceX's commercial cargo capabilities15.
1 animation | |
n.活泼,兴奋,卡通片/动画片的制作 | |
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2 falcon | |
n.隼,猎鹰 | |
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3 cape | |
n.海角,岬;披肩,短披风 | |
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4 cargo | |
n.(一只船或一架飞机运载的)货物 | |
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5 zooming | |
adj.快速上升的v.(飞机、汽车等)急速移动( zoom的过去分词 );(价格、费用等)急升,猛涨 | |
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6 musk | |
n.麝香, 能发出麝香的各种各样的植物,香猫 | |
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7 rendezvous | |
n.约会,约会地点,汇合点;vi.汇合,集合;vt.使汇合,使在汇合地点相遇 | |
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8 sensors | |
n.传感器,灵敏元件( sensor的名词复数 ) | |
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9 essentially | |
adv.本质上,实质上,基本上 | |
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10 noted | |
adj.著名的,知名的 | |
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11 optimize | |
v.使优化 [=optimise] | |
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12 administrator | |
n.经营管理者,行政官员 | |
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13 berthed | |
v.停泊( berth的过去式和过去分词 );占铺位 | |
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14 retired | |
adj.隐退的,退休的,退役的 | |
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15 capabilities | |
n.能力( capability的名词复数 );可能;容量;[复数]潜在能力 | |
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