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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年苏联向月球发射了由飞行器承载的激光反射器,然而几个月后它就消失了。有人猜测飞行器掉到了火山口里,有人猜是因为停的位置让我们无法找到反射器。40年后的现在,人们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.

加大圣地牙哥校区的研究小组一直在寻找这个反射器。今年早些时候美国太空总署的环月球巡逻者摄像机传来了其原定登陆地区的影像,人们发现阳光照射下的一个斑点就是消失的飞行器和反射器,距小组寻找的位置有几英里远。圣地亚哥小组很快就以10米内的误差精确定点了反射器的位置。

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.”

科学家们向月球发射激光脉冲,测量从阿波罗太空人留下的3个反射器及苏联反射器弹回来的信号。这些信息帮助我们追踪月球的位置及轨道。研究者们还表示重新找到的俄国反射器对于研究月球液核并测试有关重力的猜想大有裨益。反射器小组组长汤姆·墨菲说:“沉寂了40年,它有很多话要说。”


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