3rd Rock From The Sun: Where Are The Aliens Now?

Decades after their mission concluded, the cast of '3rd Rock From The Sun' has pursued varied and successful career trajectories.

John Lithgow, who portrayed mission leader Dick Solomon, expressed that his six years on the show were among the happiest of his acting career. Lithgow, a veteran actor with numerous acclaimed roles, is set to portray Albus Dumbledore in HBO's upcoming Harry Potter adaptation.

French Stewart, who played the dim-witted alien Harry, has appeared in supporting roles on sitcoms like 'Mom' and featured in the 2024 indie dramedy 'Bob Trevino Likes It.'

Joseph Gordon-Levitt, who transitioned from child stardom as Tommy, has achieved significant success in independent and blockbuster films, including 'Inception' and 'Looper,' and made his directorial debut with 'Don Jon.'

Kristen Johnston, a two-time Emmy winner for her role as Sally, has starred in 'The Exes' and 'Mom,' and is currently leading a new Netflix sitcom, 'Leanne.' She also appears in the 2026 indie comedy 'Maddie's Secret.'

Jane Curtin, who played Professor Mary Albright, has maintained a consistent television presence since her 'Saturday Night Live' days, including starring in 'Kate & Allie' and appearing in films like 'Can You Ever Forgive Me?'

Wayne Knight, known for his roles as Newman on 'Seinfeld' and Dennis Nedry in 'Jurassic Park,' had a memorable turn as Officer Don on '3rd Rock.' He later starred alongside Kristen Johnston in 'The Exes' and recently appeared in 'Five Nights at Freddy's 2' in 2025.

Simbi Khali, who played Nina, has had roles in 'We Were Soldiers' and television series such as 'The Bernie Mac Show' and 'Better Things,' with a supporting role in the 2025 drama 'Ricky.'