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| 回覆中加入附件並不會使你增加積分,請使用主題方式發佈附件。 At approximately 10:26 p.m. EST 20 February 2008, a U.S. Navy AEGIS warship, the USS Lake Erie (CG-70), fired a single modified tactical Standard Missile-3 (SM-3) hitting the satellite approximately 247 kilometers (133 nautical miles) over the Pacific Ocean as it traveled in space at more than 17,000 mph. USS Decatur (DDG-73) and USS Russell (DDG-59) were also part of the task force. On 14 February 2008 it was announced that the Navy will intercept a malfunctioning US spy satellite sometime after 20 February 2008. President Bush decided to fire a missile to bring down a broken spy satellite because of the potential danger to people from rocket fuel it is carrying. The window for intercepting the satellite would remain open for as many as seven or eight days. The military posted a NOTAM closing airspace about 1000 km West of Maui, indicating that the first intercept attempt might come on 21 February 2008 at about 03:30 UTC [10:30 PM EST on 20 February 2008]. Intercepting the satellite at about 130 nautical miles altitude will reduce the risk of debris in space. Once the satellite is hit, officials hope 50 percent of the debris will come to Earth in the first two orbits and the rest shortly thereafter. Robert Burns of the Associated Press reported 15 February 2008 that the order to launch the program came 04 January 2008. In a matter of weeks, three Navy warships — the USS Lake Erie, USS Decatur and USS Russell — were outfitted with modified Aegis anti-missile systems and three SM-3 missiles were pulled off an assembly line and given the BMD Kill Vehicle. ... |
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