Neil deGrasse Tyson is being investigated for sexual misconduct by Fox, NatGeo Networks

Renowned astrophysicist Neil deGrasse Tyson will be investigated by Fox and National Geographic Networks after allegations of sexual misconduct were leveled against him.

Patheos.com published accounts Thursday from two women who say that Tyson behaved in a sexually inappropriate manner with them. Tyson was host of “Cosmos” on Fox in 2014 and a new edition of the series was to air on National Geographic next year.

Tyson has not commented publicly and an email request for comment to his representative was not immediately returned.

In a statement the producers of “Cosmos” said: “The credo at the heart of ‘Cosmos’ is to follow the evidence wherever it leads. The producers of ‘Cosmos’ can do no less in this situation.”

They said they will conduct a thorough investigation. Meanwhile Fox and National Geographic said Friday evening that they only recently learned of the allegations and were reviewing the allegations.

Besides numerous TV appearances, Tyson is also the director of the Hayden Planetarium at the American Museum of Natural History in New York City.