A larger surface to collect light gives astronomers an opportunity to image more distant and fainter celestial targets. On Earth, the largest and most sophisticated optical telescopes use software to compensate for atmospheric distortions, which would not be an issue on the air-less moon. Getting to the moon is another matter. The United States, in partnership with other countries, plans to redirect human space exploration from low-Earth orbit to the moon and eventually other destinations in the solar system. Astronomical observatories are among the most popular lunar science program proposals, though the high cost of transportation to the moon is a problem. Chen believes building in situ is the answer. "We could make huge telescopes on the moon relatively easily, and avoid the large expense of transporting a large mirror from Earth," he said. "Constructing giant telescopes provides a strong rationale for doing astronomy from the moon." The same technique could be used to build habitats for astronauts and mirrors to collect sunlight for solar energy, Chen added. "Since most of the materials are already there in the form of dust, you don't have to bring very much stuff with you and that saves a ton of money," he said. Related Links: |
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