For a given substrate thickness, the maximum size of a single metasurface retroreflector is limited by the numerical aperture (NA) of the metasurfaces. High-NA metasurfaces deflect light by large ...

Using information provided by NASA’s Lunar Reconnaissance Orbiter (LRO) instrument teams, researchers at the University of California, San Diego, have successfully pinpointed the location of a ...

June 26 (UPI) --Scientists have developed a superior sound-reflecting material. The "retroreflector" technology can bounce back sound waves in the direction they came from. Previous retroreflectors ...

NASA's LRO (Lunar Reconnaissance Orbiter) has twice transmitted a laser pulse to a cookie-sized retroreflector aboard JAXA's (Japan Aerospace Exploration Agency) SLIM lander on the moon and received a ...

A retroreflector is a device that reflects light along its incident direction over a continuous range of incident angles 1. The retroreflector can be used in two major fields; civil and military. In ...

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On 17 November 1970, the Soviet Union’s Luna 17 mission touched down on the surface of the Moon. The lander carried a huge rover the size of a small car, called Lunokhod-1, which trundled off into ...

An epic lunar laser experiment is still going strong, five decades after the Apollo astronauts set it up on the surface. The moonwalking crew of Apollo 11, which landed on the moon 50 years ago this ...

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On January 24, NASA reported a significant achievement in lunar exploration, as its spacecraft successfully utilized a laser instrument to ping the Vikram lander of India’s Chandrayaan-3 mission. This ...