What are those strange white patterns in China's Gobi Desert? For weeks, experts have puzzled over the crazy lines that show up in satellite images.
Some of the theories have taken wild turns: Maybe they're messages directed at Earth-observing extraterrestrials, or part of a UFO development program, or the remains of ancient cities. But the leading theory is that these patterns serve a variety of purposes for the Chinese military, including calibrating satellite imaging systems and testing radar avoidance techniques. There have also been claims that these are "fractal antennas" to shield underground weapons facilities from ground-penetrating radar.
This particular crazy-quilt pattern was picked up on July 27 from an altitude of 423 miles by the IKONOS satellite, one of the spacecraft in a commercial Earth-imaging constellation operated by GeoEye. The picture is today's offering from the Cosmic Log Space Advent Calendar, which features views of Earth from space every day until Christmas...
An image captured by GeoEye's IKONOS commercial satellite shows a weird pattern of white lines in China's Gobi Desert on July 27.
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