Celebrity astrophysicist Neil deGrasse Tyson is being investigated by Fox and National Geographic Networks over sexual misconduct allegations lodged against him.

Two women came forward to accuse deGrasse Tyson of misconduct Thursday in a story on the website Patheos. In 2014, a former classmate of deGrasse Tyson's at the University of Texas in Austin accused him of rape in a blog post.

In the Patheos story, Katelyn Allers, a Bucknell University physics and astronomy professor, accused deGrasse Tyson of groping her at an American Astronomical Society meeting in 2009. Allers said that the alleged groping didn’t rise to the level of assault, but that it did show Tyson was capable of some “creepy behavior.”

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Ashley Watson, who also came forward in the Patheos story, said the deGrasse Tyson tried to persuade her into having sex and made "misogynistic comments" occasionally.

Musician Tchiya Amet claimed in 2014 that deGrasse Tyson drugged and raped her while they were both in school in the 1980s.

Fox and sister cable channel National Geographic released a statement Friday saying they had just been informed of the allegations.

“We have only just become aware of the recent allegations regarding Neil deGrasse Tyson," they wrote. "We take these matters very seriously and we are reviewing the recent reports."

The producers of "Cosmos," a 2014 show which Fox and National Geographic were set to reboot in 2019, also released their own statement.

"The credo at the heart of COSMOS is to follow the evidence wherever it leads," they wrote.

"The producers of COSMOS can do no less in this situation. We are committed to a thorough investigation of this matter and to act accordingly as soon as it is concluded.”

DeGrasse Tyson has yet to publicly address the sexual misconduct allegations.

--This report was updated on Dec. 2 at 9:57 a.m.