Bill Nye the "Science Guy" is officially a married man.

People magazine shared that Nye, 66, wed journalist and author Liza Mundy, 61, in late May at the Smithsonian Institute in Washington, D.C.

The couple’s initial introduction stemmed from Mundy’s book, "Code Girls: The Untold Story of the American Women Code Breakers of World War II," where she mentioned Nye’s mother, Jacqueline Jenkins-Nye. 

Bill Nye, Liza Mundy

Bill Nye is officially a married man! The "Science Guy" wed author Liza Mundy in late May. (Photo by Monica Schipper/Getty Images)

Nye caught wind of Mundy’s book, and he e-mailed her, which is where their love story began.

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Nye was previously married to journalist Blair Tindall in 2006. Their marriage was short, and the couple separated the same year. The couple share their daughter, Charity, 19.

"Star Trek" star Robert Picardo served as the couple’s officiant on their wedding day, and the couple reportedly wrote their own vows.

Bill Nye, Blair Tindall

Blair Tindall and Bill Nye married in 2006. The couple share their daughter, Charity, 19. (Photo by Rodrigo Vaz/FilmMagic)

The duo kept their wedding looks timeless as Nye wore cufflinks that were his father’s, which featured small blue stones. 

Mundy wore a white, satin sleeveless gown with a bright flower bouquet. 

Nye’s brother, Darby, and his friend of over 50 years, Brian, were amongst those who shared a special toast. Mundy’s daughter, Anna, also shared kind words.

Bill Nye

Nye first reached out to Mundy via e-mail. (Photo by Jamie McCarthy/Getty Images for Tribeca Festival)

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As the night unfolded, Mundy changed into sneakers before sharing the first dance with her husband. Nye and Mundy danced to Sam Cooke’s version of "What a Wonderful World."