Neil deGrasse Tyson toyed with creationist beliefs Sunday night on the latest episode of Cosmos.

The astrophysicist explained during the episode, “Sky Full of Ghosts,” that the Crab Nebula disproved the Bible-based belief about the age of the universe.

“The Crab Nebula is about 6,500 light years from Earth,” Tyson said. “According to some beliefs, that’s the age of the whole universe, but if the universe were only 6,500 years old, how could we see light from anything more distant than the Crab Nebula? We couldn’t.”

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Light travels about 6 trillion miles per year, and Tyson said there simply wouldn’t be enough time for light to reach Earth from celestial bodies beyond the Crab Nebula.

“To believe in a universe as young as 6,000 or 7,000 years old is to extinguish the light from most of the galaxy, not to mention the light from all the other hundred billion other galaxies in the observable universe,” Tyson said.

Creationists complained last month that “Cosmos” didn’t even pay lip service to their beliefs and demanded equal time on the Fox program, but this is probably not quite what they meant.

The reference also suggests that Tyson might just be using his prime-time program to discredit creationist beliefs, one by one.

Watch the full episode posted online by Hulu: