Astronomers keep finding giant radio rings in space they can't explain

Astronomers are investigating a mysterious discovery: enormous rings of radio light scattered throughout deep space. Each one measures more than fifty times the width of the Milky Way and glows only at radio wavelengths — completely invisible to optical, infrared, and X-ray telescopes. The rings brighten at their edges, but their origin remains unexplained. According to Boing Boing, these odd radio circles defy explanation by current scientific models.

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