The words sound jarring coming from Neil deGrasse Tyson , a man who has spent decades dismantling pseudoscience and explaining the cosmos with unwavering clarity. In a viral clip from his StarTalk YouTube channel, he says, “Lately, I have been doing calculations as well as looking back at old NASA footage and raw data from satellites hovering above Earth. And I just can't escape the conclusion that the Earth might actually be flat,"” Except it isn’t him. Moments later, the real Tyson appears on screen, holding up a phone playing the same video. “That’s not me,” he says evenly. “It was never me. Those aren’t my words.” The clip is a deepfake, an AI-generated fabrication indistinguishable from the real thing. It’s fitting, in a way. Tyson’s voice and likeness have become a staple o

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