Extremely fast radio signals from a surprising source (IMAGE)
Caption
Extremely fast radio signals from a surprising source. A cluster of ancient stars (left) close to the spiral galaxy Messier 81 (M81) is the source of extraordinarily bright and short radio signals. The image shows in blue-white a graph of how one flash’s brightness changed over the course of only tens of microseconds.
Credit
Daniëlle Futselaar, artsource.nl
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