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SCIENCE & TECHNOLOGY - October 2015

Oct 2015

Oct 02, 2015

Asteroids Moon's Main Water Supply

  • Using computer simulation, the scientists discovered that a large asteroid can deliver more water to the lunar surface than the cumulative fall of comets over a billion year period.
  • Water reserves found on the moon are the result of asteroids acting as "delivery vehicles" and not of falling comets as was previously thought, new research has found.
  • At the beginning of the space age, during the days of the Apollo programme, scientists believed the moon to be completely dry.
  • However, in the1990s, obtaining data from NASA's Lunar Prospector probe, scientists found signs of the presence of water on the moon.

Oct 01, 2015

First Optical Rectenna

  • A team of engineers and researchers has demonstrated the world's first optical rectenna, a device that combines the functions of an antenna and a rectifier diode to convert light directly into DC current.
  • The optical rectennas can provide a new technology for photodetectors that would operate without the need for cooling, energy harvesters that would convert waste heat to electricity and ultimately a new way to efficiently capture solar energy.
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