Thu, May 09, 2013 - Page 10 News List

Large asteroid heading to Earth? Pray, says NASA

The passage of asteroid 2012 DA14 through the Earth-moon system is depicted in this handout image from NASA.
NASA提供2012 DA14隕石經過地球月球系統的路徑。

Photo: Reuters

National Aeronautics and Space Administration (NASA) chief Charles Bolden has advice on how to handle a large asteroid headed toward New York City — pray.

That is about all the US — or anyone for that matter — could do at this point about unknown asteroids and meteors that may be on a collision course with Earth, Bolden told lawmakers at a US House of Representatives Science Committee hearing on March 19.

An asteroid estimated to have been about 17m in diameter exploded on Feb. 15 over Chelyabinsk, Russia, generating shock waves that shattered windows and damaged buildings. More than 1,500 people were injured.

Later that day, a larger, unrelated asteroid discovered last year passed about 27,681km from Earth, closer than the network of television and weather satellites that ring the planet.

The events “serve as evidence that we live in an active solar system with potentially hazardous objects passing through our neighborhood with surprising frequency,” said Representative Eddie Bernice Johnson, a Texas Democrat.

NASA has found and is tracking about 95 percent of the largest objects flying near Earth, those that are 1km or larger in diameter.

(Liberty Times)









1. unknown adj.

未知的 (wei4 zhi1 de5)

例: The cause of the disease is still unknown at this point.


2. on a collision course idiom

朝衝突方向發展 (chao2 chong1 tu2 fang1 xiang4 fa1 zhan3)

例: The two countries appear to be on a collision course.


3. hazardous adj.

危險的 (wei2 xian3 de5)

例: Throw away bottles that have contained pesticides, herbicides, motor oil or other hazardous materials.


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