Astronomers and science journalists should consider adjusting their terminology, eg 'detected a radio wave'. Saying you received a signal implies communication, and then requires 1-2 paragraphs in the story refuting the misleading aspect of the headline, wasting everyone's time.
I know the article says it's not aliens, but... What happens to a very high power communication over intergalactic distances? Supposing you had a very high power radio transmitter, and you modulated it somehow. Over how long a distance can it be demodulated? What would a signal look like after you can't discern the modulation?
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