People are too complacent about the asteroid threat for Bill Nye’s liking.

The former TV “Science Guy,” who currently serves as CEO of the nonprofit Planetary Society, warned that catastrophic impacts like the one that offed the dinosaurs 66 million years ago are not confined to the past.

“The Earth is going to get hit with another [big] asteroid,” Nye said yesterday (May 2) at the International Academy of Astronautics’2019 Planetary Defense Conference in College Park, Maryland.

Related: Potentially Dangerous Asteroids (Images)

“The problem is, we don’t know when,” he added. “It’s a very low probability in anyone’s lifetime, but it’s a very high-consequence event. If it happens, it would be like control-alt-delete for everything.”

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