China is building the world's largest radio telescope to detect signs of life billions of light years away

The 500-Meter Aperture Spherical Telescope (FAST) is being built in China. With a dish the size of 30 football fields, it will be the largest radio telescope in the world when it is completed in 2016. Its unique design will allow scientists to gather radio signals from tens of billions of light years away.

Video courtesy of Reuters

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