男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影
WORLD> America
NASA wants proposals for US-made space taxis
(Agencies)
Updated: 2009-08-11 15:18

CAPE CANAVERAL, Fla.: NASA plans to use $50 million of federal economic stimulus funds to seed development of commercial passenger transportation service to space, agency officials said on Monday.

Aspiring spaceship operators will have 45 days to submit proposals, which will be competitively evaluated. Awards for the Commercial Crew Development program are expected to be announced before the end of September.

NASA wants proposals for US-made space taxis
The space shuttle Discovery rolls out of the Vehicle Assembly Building to Launch Pad 39A at NASA's Kennedy Space Center in Cape Canaveral, Florida August 4, 2009. [Agencies]

The United States is retiring its fleet of space shuttles next year after seven more missions to complete construction of the $100 billion International Space Station, which orbits about 225 miles (360 km) above Earth.

After that, the United States plans to buy rides for astronauts to and from the station from Russia, one of the 16 nations involved in the station program.

NASA is spending $500 million to help two US firms, Space Exploration Technologies, a privately held company known as SpaceX, and Orbital Sciences Corp, develop rockets and capsules to deliver cargo to the station.

SpaceX's contract includes an option to upgrade its Dragon cargo ship for passenger service. The company has said it needs $300 million, most of which would be used to develop a launch escape system for the crew.

"It's a little disappointing that (the new program) is only $50 million," SpaceX founder and chief executive Elon Musk told Reuters. "Fifty million is what it costs for one seat on the (Russian) Soyuz."

Nevertheless Musk hailed the move as a step in the right direction.

"The main thing that the public should be taking note of is that right now we are (solely dependent) on the Russians (for space transports) after 2010," he said.

The White House has convened a panel, headed by former Lockheed Martin chief Norm Augustine, to review NASA's human space program. The current plan is to finish the station next year, retire the shuttles and develop new vehicles that can travel to the space station as well as to the moon and other destinations in the solar system.

Related readings:
NASA wants proposals for US-made space taxis NASA releases restored Apollo 11 moonwalk video
NASA wants proposals for US-made space taxis Former astronaut to head NASA
NASA wants proposals for US-made space taxis NASA set for third shuttle launch try Saturday
NASA wants proposals for US-made space taxis Russia to charge NASA $51 million per space flight

NASA wants proposals for US-made space taxis NASA starts layoffs as shuttles to retire

Funding for the follow-on program has been scaled back to $81.5 billion from $108 billion between 2010 and 2020, the year pegged for the first post-Apollo moon landing.

Members of a presidential panel reviewing the country's human space program said last week that given current budget forecasts and no changes in the program, a moon landing would not occur until the mid 2020s at the earliest.

The panel, which is scheduled to make its report by August 31, also has been mulling extending the life of the space station beyond its projected shut-down date of 2015.

In addition to scientific uses, having a station in orbit will serve as a market to stimulate commercial space development, said board member Jeff Greason, the co-founder and head of XCOR Aerospace.

NASA plans to hold a workshop in Houston on Thursday for companies interested in partnering to develop commercial passenger service to space.

Firms expressing interest in the program include Ball Aerospace and Technologies Corp., Airborne Systems, SpaceX, Boeing Co, Tether Applications, Retro Aerospace, Emergent Space Technologies, Davidson Technologies, and Paragon Space Development Corp.

The competition is only open to US firms.

主站蜘蛛池模板: 正镶白旗| 永德县| 辰溪县| 北京市| 将乐县| 随州市| 云安县| 维西| 社旗县| 桂东县| 故城县| 三都| 华坪县| 香港| 民县| 普定县| 吕梁市| 美姑县| 澄江县| 广安市| 时尚| 互助| 田林县| 永泰县| 澜沧| 庆阳市| 襄樊市| 桂东县| 孟津县| 连南| 大城县| 岗巴县| 喀喇沁旗| 依安县| 昭苏县| 丰原市| 余姚市| 获嘉县| 漳平市| 阿拉善盟| 灵川县| 汕头市| 龙江县| 顺义区| 莒南县| 拜城县| 于都县| 柘城县| 富民县| 曲麻莱县| 贡山| 保德县| 陆川县| 海南省| 沭阳县| 绥化市| 额济纳旗| 岳普湖县| 邵东县| 嘉定区| 扶绥县| 杭锦后旗| 六枝特区| 寻乌县| 柞水县| 广丰县| 安福县| 株洲县| 大悟县| 南和县| 靖远县| 古蔺县| 新乡市| 芮城县| 榆社县| 曲水县| 荆州市| 包头市| 革吉县| 林西县| 赣榆县| 绵竹市|