Future: Advertising Aurora

"By shooting intense radio beams into the night sky, researchers created a modest neon light show visible from the ground.

It is not yet clear if the aurora must already be active before an artificial sky show can be induced, says Karl Ziemelis, chief physics editor at the journal. If no pre-existing aurora is required, Ziemelis said, "we are left with the tantalizing (some would say disconcerting) possibility that such radio-fuelled emissions could form the basis of a technology for urban lighting, celestial advertising, and more."
You bet.
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