Cast Of 'Genius' 2017: Albert Einstein Documentary In Nat Geo Stars Geoffrey Rush, Emily Watson, And Others

The long-awaited series about the scientist who gave the world the Standard Model of physics finally began airing Tuesday night. "Genius" is a 10-episode series based that explores the personal life of Albert Einstein, and it is on National Geographic.

The series features Oscar winner Geoffrey Rush as Einstein, Emily Watson as his second wife, and Seth Gabel in the role of Einstein’s friend Michele Besso, according to National Geographic. Johnny Flynn plays the role of a young Einstein.

"Genius" is the network's first-ever scripted series and covers the years from 1880s to the 1950s. It is based on the Walter Isaacson's book "Einstein: His Life and Universe." Ron Howard directed the first episode, while he and Brian Grazer are executive producers of the show. Over the course of 10 episodes, Einstein's struggles in his personal life will be showcased. The story will move beyond the world of academia and focus on how he found it difficult to be a good husband and father, according to the channel.

Read: Check Albert Einstein's Quotes To Celebrate His 138th Birthday

Both of Einstein's wives are shown in the series, along with several admirers whom the eccentric physicist had liaisons with. Both romance and politics intrigued Einstein, which will also be portrayed in the upcoming episodes.

"He was a philanderer extraordinaire," Watson said during a chat the cast had with TV Guide.

“The story’s very sexy, I mean Einstein was promiscuous,” Gabel added. “He was a man who could not be tied down to one woman and he was very honest about that.”

In the chat, the cast also discussed how Einstein was almost denied entry to the U.S. and how his story is relevant to today's time as well. While Einstein was visiting the United States in 1933, Adolf Hitler became the chancellor of Germany, and the scientist decided to not return home where he was teaching at the Berlin Academy of Sciences.