日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

Science and Health

NASA: Good night moon, hello new rocket technology

(China Daily)
Updated: 2010-02-02 09:35
Large Medium Small

WASHINGTON: US President Barack Obama is redirecting America's space program, killing NASA's $100 billion plans to return astronauts to the moon and using much of that money for new rocket technology research.

NASA: Good night moon, hello new rocket technology
This 2009 NASA handout image shows a color mosaic of the moon, assembled from 18 images taken by Galileo's imaging system through a green filter. [Agencies]?
The moon mission, which had already cost $9.1 billion, was based on old technology and revisiting old places astronauts had already been, officials said. The previous NASA chief, in selling the old moon plan, had even called it "Apollo on steroids." The rockets were based on space shuttle boosters.

"Simply put, we're putting the science back into the rocket science at NASA," White House science adviser John Holdren said at a budget briefing Monday.

The $4 billion that NASA spends yearly on human space exploration will now be used for what NASA and White House officials called dramatic changes in rocketry, including in-orbit fueling. They said eventually those new technologies would be used to send astronauts to a nearby asteroid, a brief foray back to the moon, or the Martian moons.

The White House plan was short on details, such as where astronauts would fly next, on what type of rocketship, or when. However, officials were quick to point out the failures of the Bush administration's moon program, called Constellation. It included the construction of two types of rockets, Ares I and Ares V, and an Orion crew capsule. All were canceled. Shutting down the program will cost about $2.5 billion, NASA said.

Related readings:
NASA: Good night moon, hello new rocket technology Obama axes NASA moon plan
NASA: Good night moon, hello new rocket technology NASA to launch space shuttle Endeavour on Feb. 7
NASA: Good night moon, hello new rocket technology Five new planets discovered by NASA's Kepler Spacecraft
NASA: Good night moon, hello new rocket technology NASA marks sixth anniversary of Mars rovers

Former President George W. Bush proposed the moon mission after the Feb. 1, 2003, space shuttle Columbia disaster that claimed seven lives — exactly seven years ago Monday. And congressional boosters of the plan aren't willing to give up on it just yet.

Sen. Bill Nelson, D-Fla., and chairman of the Senate space subcommittee, said he will hold a hearing later this month to see if Congress could rescue some parts of the Ares rocket programs.

"This is a pretty substantial change," said MIT astronautics professor Ed Crawley, who was on a special panel that looked at the future of spaceflight for the White House. "It is more change than I thought they'd take on."

Crawley said the Bush moon plan was well thought out, but based on existing technologies and underfunded.

"We didn't lose the moon today; we very subtly lost the moon a long time ago when the amount of money disappeared a few years ago," Crawley said.

Besides redirecting money to new technologies, NASA is getting an extra $6 billion over five years to encourage companies to build private spaceships that NASA could rent. Many of those companies are run by Internet pioneers, including Blue Origin, headed by Amazon founder Jeff Bezos. Another firm, SpaceX, run by PayPal founder Elon Musk, is already building private rockets.

In a teleconference Monday, Musk said that within three years of getting a contract with NASA, he could deliver astronauts to the International Space Station for about $20 million a head — cheaper than the $50 million Russia is charging the United States.

NASA now has seven companies getting money to work on planning for some types of commercial spaceships.

Former NASA associate administrator Scott Pace, now a professor of space policy at George Washington University, said relying so much on commercial companies is taking a big chance because they might not deliver on time or on budget.

"The risks are higher, the goals are more vague," Pace said of the new space policy. "It's more money but probably not enough."

NASA will also spend an additional $2.5 billion over five years for more research on how global warming is affecting Earth, including replacing a carbon dioxide monitoring satellite that crashed last year. NASA will also extend the life by several years of the International Space Station, which had been slated for retirement in 2016. NASA's yearly budget is $19 billion.

NASA said if the private companies work well on their unproven spaceships, astronauts could fly in them to the space station as soon as 2016. After the next five space shuttle flights, NASA will have to hitch rides to the space station on Russian rockets.

"The truth is we were not on a sustainable path to get back to the moon," NASA administrator Charles Bolden said in a telephone conference call. "We were neglecting investments in key technologies."

Congressional officials howled over lost programs and jobs, but it is hard for Congress to save such a large program that is being cut with redistributed money. Sen. Richard Shelby, R-Ala., called the cancellation of the moon mission the "death march for the future of US human space flight."

主站蜘蛛池模板: a毛片视频 | 99国产精品99久久久久久粉嫩 | 日韩精品一二三区 | 天天干天天色天天爽 | 国产区在线看 | 久久久久亚洲精品 | 亚洲图片一区 | 在线亚洲欧美 | 极品毛片 | 亚洲国产天堂 | 天天干天天爱天天操 | 成人蜜桃网 | 亚洲唯美 | 日韩精品无码一区二区三区 | 色男人的天堂 | 另类欧美亚洲 | 欧美影院一区 | 日本高清视频一区二区 | 久久色图 | 91美剧| 亚洲成人精品一区二区三区 | 久久亚洲天堂 | 青青草福利视频 | 国产精品666 | 九九久久免费视频 | 黄色在线免费播放 | 综合欧美日韩 | 99热这里都是精品 | 免费在线观看的黄色网址 | ijzzijzzij亚洲大全 | 亚洲精品网址 | 欧美日韩中文字幕在线 | 黑人啪啪 | 日本一级片在线播放 | 天天躁日日躁狠狠躁av麻豆男男 | 91日韩欧美 | 国产原创视频在线观看 | 成人综合在线视频 | 亚洲欧美日韩偷拍 | 性爱视频在线免费 | 青草99 |