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Long-Lost Lunar Soviet Laser Reflector Found

In 1970 the Soviet Union put a laser reflector on the moon, carried by a rover. A few months later, it disappeared. Some speculated that the rover had fallen into a crater or parked in such a way as to render the reflector inaccessible. Now, after 40 years on the lunar surface, the reflector has been found.

1970年蘇聯(lián)向月球發(fā)射了由飛行器承載的激光反射器，然而幾個月后它就消失了。有人猜測飛行器掉到了火山口里，有人猜是因為停的位置讓我們無法找到反射器。40年后的現(xiàn)在，人們在月球表面上找到了反射器。

A team at U.C. San Diego had been searching for it. Earlier this year, NASA’s Lunar Reconnaissance Orbiter camera provided images of the original landing area. A sunlit speck, miles from where the team was looking, turned out to be the rover and reflector. The San Diego team was quickly able to pinpoint the reflector’s location to within 10 meters.

加大圣地牙哥校區(qū)的研究小組一直在尋找這個反射器。今年早些時候美國太空總署的環(huán)月球巡邏者攝像機(jī)傳來了其原定登陸地區(qū)的影像，人們發(fā)現(xiàn)陽光照射下的一個斑點就是消失的飛行器和反射器，距小組尋找的位置有幾英里遠(yuǎn)。圣地亞哥小組很快就以10米內(nèi)的誤差精確定點了反射器的位置。

Scientists send laser pulses to the moon and measure signals that bounce back from three reflectors left by Apollo astronauts, along with another Soviet one. This information helps track the moon’s position and orbit. And the researchers say that the rediscovered Russian reflector is particularly useful for studying the moon’s liquid core and testing ideas about gravity. Says team leader Tom Murphy of the reflector, “It’s got a lot to say after almost 40 years of silence.”

科學(xué)家們向月球發(fā)射激光脈沖，測量從阿波羅太空人留下的3個反射器及蘇聯(lián)反射器彈回來的信號。這些信息幫助我們追蹤月球的位置及軌道。研究者們還表示重新找到的俄國反射器對于研究月球液核并測試有關(guān)重力的猜想大有裨益。反射器小組組長湯姆·墨菲說：“沉寂了40年，它有很多話要說。”


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