Researchers proposed a new method to search for extraterrestrial intelligent civilization: finding city lights in other planets. The researchers believe that such idea is better than finding radio signal coming from aliens because they might already use technology that makes radio signal difficult to detect and capture. However, the two admitted that current telescope available is not sensitive enough to determine city lights from other planets. Nevertheless, with the fast pace of the advancement of telescope, the two researchers believe that the technology that could see city lights from other planets would be developed very soon.
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