The laser pointer reflected between the earth and the moon promotes the development of science
Since 2009. NASA's Lunar Reconnaissance Orbiter (LRO) orbits the moon a dozen times a day. There are 6 high-tech instruments on the lunar survey orbiter. These 6 high-tech instruments not only helped scientists draw a detailed map of the moon. And let them know more about the radiation and temperature on the surface of the moon. But in fact, the lunar reconnaissance orbiter also carries a fairly simple instrument: a book-sized reflector. More precise laser pointer experiments can also help scientists learn more about the core of the moon. By measuring the tiny shaking of the moon as it rotates, past laser experiments revealed that the moon has a fluid core. But there may be a solid core inside these liquids-it may have helped create the moon's now-disappearing magnetic field. However, to confirm this hypothesis, more precise measurements are needed. The accuracy of this measurement may help improve our understanding of gravity and the evolution of the solar system.
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In the past ten years. Scientists have been shooting laser beams from Earth to the reflector of the lunar reconnaissance orbiter about 240,000 miles away. Hope to catch the return signal. On Monday, NASA scientists and their French colleagues announced. They successfully received the return signal for the first time. What information can scientists collect from the laser light reflected from the lunar reconnaissance orbiter? First, it accurately reveals the time it takes for the photon to go back and forth-2.5 seconds on average. Scientists can use this time to determine the exact distance of an object. At the same time, by measuring tiny fluctuations in duration, they can study the subtle movements of the moon.
2021-01-06 05:52:26
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