This new 'color vision' allows us to tease apart the effects of Einstein's gravity from the hot gas and magnetic fields that feed the black holes and launch powerful jets that stream over galactic distances.
When you have two separate frequencies, you're able to tease apart different effects around the black hole. Seeing two frequencies would reveal more of its organized chaos.
Albert Einstein predicted that gravity bends all light, across all wavelengths, in the same way. Right around the black hole's shadow, data across both frequencies may look the same.
But farther away from the event horizon, other phenomena like the black hole's jets of superheated plasma will look differently from one frequency to the next.
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