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And now we have China shooting down satellites

post #1 of 13
Thread Starter 
http://www.cnn.com/2007/TECH/space/0...ile/index.html

Quote:
WASHINGTON (CNN) -- China last week successfully used a missile to destroy an orbiting satellite, U.S. government officials told CNN on Thursday, in a test that could undermine relations with the West and pose a threat to satellites important to the U.S. military.

According to a spokesman for the National Security Council, the ground-based, medium-range ballistic missile knocked an old Chinese weather satellite from its orbit about 537 miles above Earth. The missile carried a "kill vehicle" and destroyed the satellite by ramming it.

The test took place on January 11. (Watch why the U.S. has protested the missile strike )

Aviation Week and Space Technology first reported the test: "Details emerging from space sources indicate that the Chinese Feng Yun 1C (FY-1C) polar orbit weather satellite launched in 1999 was attacked by an asat (anti-satellite) system launched from or near the Xichang Space Center."

A U.S. official, who would not agree to be identified, said the event was the first successful test of the missile after three failures.

The official said that U.S. "space tracking sensors" confirmed that the satellite is no longer in orbit and that the collision produced "hundreds of pieces of debris," that also are being tracked.

The United States logged a formal diplomatic protest.

"We are aware of it and we are concerned, and we made it known," said White House spokesman Tony Snow.

Several U.S. allies, including Canada and Australia, have also registered protests, and the Japanese government said it was worrisome.

"Naturally, we are concerned about it from the viewpoint of security as well as peaceful use of space," said Yashuhisa Shiozaki, chief cabinet secretary. He said Japan has asked the Chinese government for an explanation.

The United States has been able to bring down satellites with missiles since the mid-1980s, according to a history of ASAT programs posted on the Union of Concerned Scientists Web site. In its own test, the U.S. military knocked a satellite out of orbit in 1985.

Under a space policy authorized by President Bush in August, the United States asserts a right to "freedom of action in space" and says it will "deter others from either impeding those rights or developing capabilities intended to do so."

The policy includes the right to "deny, if necessary, adversaries the use of space capabilities hostile to U.S. national interests."

Low Earth-orbit satellites have become indispensable for U.S. military communications, GPS navigation for smart bombs and troops, and for real-time surveillance. The Chinese test highlights the satellites' vulnerability.

"If we, for instance, got into a conflict over Taiwan, one of the first things they'd probably do would be to shoot down all of our lower Earth-orbit spy satellites, putting out our eyes," said John Pike of globalsecurity.org, a Web site that compiles information on worldwide security issues.

"The thing that is surprising and disturbing is that [the Chinese] have chosen this moment to demonstrate a military capability that can only be aimed at the United States," he said.
Seriously.......What's next.
post #2 of 13
Well, duh...we invade the Chinese.

It's the obvious next step to secure freedom.

...and our Commander-in-Chief is the man to bring it on. I think that ole Bushy has just what it takes to stick it to those slant-eyed SOBs.

...and remember, tune in to Papa Bear Bill O'Reilly as he verbally takes it to the Chinks on The Factor, 5 nights a week on Fox News.

Fox News, fair and balanced.
post #3 of 13
So China shot down one of their OWN satellites? Hardly grounds for a cry of "the sky is falling in!".

This sounds like the White House saying "we want space so we can blow the shit out of any enemies that arise, and no-one should be allowed to try and do the same".
post #4 of 13
Quote:
A U.S. official, who would not agree to be identified, said the event was the first successful test of the missile after three failures.
So... the US is fine with these thing, as long as China misses?
post #5 of 13
The US said it wanted to abandon the concept of space being off limits as a battleground. All China's done is believe it. What's the problem here?
post #6 of 13
This is just the usual military paranoia. China isn't looking for a fight and won't be in the future, either.

Still, that's pretty awesome. It's like the chinese were shooting pebbles at a target in outer space.
post #7 of 13
Isn't this how "Swan Song" started?
post #8 of 13
China has no desire to fight with the US. At least not in the near future. But if they start messing with the Hammer of Dawn, well then it's just go time.

JS
post #9 of 13
Quote:
Originally Posted by CNN
The United States has been able to bring down satellites with missiles since the mid-1980s, according to a history of ASAT programs posted on the Union of Concerned Scientists Web site. In its own test, the U.S. military knocked a satellite out of orbit in 1985.
Not to be nitpicking but this is not entirely accurate.
In 1985 a F-15 fighter shot down the science satellite "Solwind P78 1" in an orbit of 600km with a special rocket. China managed to shoot down a satellite from 850km orbit with a ballistic missile. Though they kinda cheated because they brought this satellite in the right position beforehand it is still a major step forward for "Star Wars".
The actual danger today seems to be that you have thousands of debris pieces flowing in the orbit that most commercial satellites use. This could cause serious damage to some of them.
So let´s begin a new arms race!
I am buying Raleigh shares now....
post #10 of 13
Quote:
Originally Posted by Ian Challis
This sounds like the White House saying "we want space so we can blow the shit out of any enemies that arise, and no-one should be allowed to try and do the same".
Actually, they've already and explicitly said that when Dubya announced the new national space policy, a few months ago.
post #11 of 13
This could very well be a response to the recent indications that the National Space Policy is militarizing Earth Orbit. http://www.washingtonpost.com/wp-dyn...101701484.html

EDIT: was mastronikolas said; there's the link!

This is not a good thing.

This raises concerns about the 'Cascade' effect - the theory that orbital warfare (or even orbital overcrowding) could lead to a chain reaction of debris destroying everything in orbit, to the point that we would become trapped on Earth. Im not entirely positive as to the physics involved, but it does seem an object traveling at a high enough velocity, splintered into thousands of tiny different vectors, could fuck up a huge area of space. The theory goes that these tiny pieces of debris could destroy any manmade object their new orbit intersects, given their extreme velocity, and this would create an unstoppable chain reaction.

Is anyone more familiar with this theory? I would like to see some sort of actual confirmation this is a legitimate concern, and not just some random kookiness I read somewhere.
post #12 of 13
Quote:
Originally Posted by Zhukov
Is anyone more familiar with this theory? I would like to see some sort of actual confirmation this is a legitimate concern, and not just some random kookiness I read somewhere.
In lack of own scientific words:

http://en.wikipedia.org/wiki/Kessler_Syndrome

I reckon thats what you are talking about?
post #13 of 13
THats it precisely, thank you kind sir.
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