Big Bang Theory star Simon Helberg and his wife Jocelyn Towne welcome a baby girl called Adeline

He may often be studying the moon in his hit show The Big Bang Theory. But actor Simon Helberg is currently on cloud nine after he and his wife Jocelyn Towne welcomed a new baby girl into the world last week. The couple's representation confirmed that they are the proud parents of a daughter called Adeline. 'The family is thrilled,' a source told the magazine. 'Simon is excited to be a father... he's been doing his reading.'

New parents: Big Bang Theory actor Simon Helberg and his wife Joceyln Towne are the proud parents of a baby girl called Adeline

Helberg – who famously plays the role of aerospace engineer Howard Wolowitz in the CBS sitcom - met Towne in his home town of Los Angeles The pair married in 2007 and have enjoyed five years in wedlock. A recent move from the TV star could have been taken as a big hint he was accommodating for an expanding family. In November last year, Simon – whose other film and TV credits include MADtv, National Lampoon's Van Wilder, A Cinderella Story and A Serious Man – splashed out on a pad formerly owned by Charlie Sheen. He reportedly paid $2.9million for the former Two and a Half Men actor’s palatial pad, according to Realtor.com.

Famous role: Helberg famously plays the role of aerospace engineer Howard Wolowitz in the hit CBS sitcom

The stunning Mediterranean-style home was built in 1927 and is located just south of the Griffith Observatory and Mount Hollywood in the prominent Los Feliz neighbourhood. The 4,200-square-foot land features a restored interior with Bouquet Canyon stone flooring, a spacious living room with trestle-style vaulted ceilings, a formal dining room and a master suite. It also boasts an outdoor courtyard and walkways that lead to an large backyard and pool. Helberg, who plays tight-trousers-and-turtleneck-wearing nerd for his main job, was nominated for Outstanding Performance by an Ensemble in a Comedy Series at the 18th Annual SAG Awards this year. Prior to finding fame on the programme, the Californian had small roles on Sabrina The Teenage Witch, Arrested Development and Less Than Perfect.