Astronomers keep finding giant radio rings in space they can't explain
by Ellsworth Toohey from Boing Boing on (#76WHY)
Astronomers keep finding enormous rings of radio light in deep space that nothing in the textbooks can account for. Each is more than 50 times the width of the Milky Way, glows only at radio wavelengths - invisible to optical, infrared, and X-ray telescopes - and is brightest around its edges. - Read the rest
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