Discovering the Enigmatic Marta Kristen: From Lost in Space to Her Life Beyond the Screen

Marta Kristen, the Swiss-born American actress, captured the hearts and minds of millions in the 1960s as the young and adventurous Judy Robinson in the iconic television series “Lost in Space.” Her talent, grace, and beauty on and off the screen catapulted her into the spotlight and cemented her as a beloved cultural icon. But what happened to Marta Kristen after she left the show?

Here, we explore the enigmatic Marta Kristen and her varied life beyond the screen. We delve into her early years, her career-defining role as Judy Robinson in “Lost in Space,” her other acting roles and achievements, her personal life, and her activities as a public figure. So, let’s discover the amazing and enigmatic Marta Kristen.

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Early Years and Personal Life

Marta Kristen was born Birgit Annalisa Rusanen in Oslo, Norway, in 1945, to a Finnish mother and a German-Jewish father. Soon after her birth, her family migrated to the United States, and they eventually settled in Los Angeles. Kristen grew up in a broken home, with her parents divorcing when she was young. She went to Beverly Hills High School, where she showed her acting talent in school productions.

In 1963, at the age of 18, Marta Kristen married photographer and filmmaker Roy F. Thinnes. Their marriage lasted until 1975, and they had two children together, Richard and Bianca Thinnes. After her divorce from Roy Thinnes, Kristen married a prominent psychiatrist, Dr. Sumner F. Clickner Jr. Unfortunately, that marriage also ended in divorce.

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“Lost in Space” Years

Marta Kristen’s biggest claim to fame was her role as Judy Robinson in the hit sci-fi series “Lost in Space” from 1965 to 1968. The series follows the Robinson family as they embark on a mission to colonize a planet in the Alpha Centauri system, where they encounter various alien beings and threats. Marta Kristen’s character played a crucial role in the show, often serving as the voice of reason and mediator within the family.

Kristen’s portrayal of Judy Robinson was a breath of fresh air, breaking the mold of the typical damsel in distress. She presented a strong and independent female character, which resonated with audiences worldwide. Her chemistry with her co-stars, especially her on-screen father, Professor John Robinson, was heartwarming and relatable. The role brought her immense fame and recognition, and her face became a popular image in popular culture.

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Other Acting Roles and Achievements

After “Lost in Space,” Marta Kristen continued to work in the film and television industry, taking on various roles in different formats. She appeared in hit shows like “Hawaii Five-O,” “The Love Boat,” and the soap opera “Days of Our Lives.” Additionally, she worked on a few movies before transitioning to theater acting.

In 1981, Marta Kristen made her stage debut in “The Allergist’s Wife,” and she proceeded to work in multiple stage productions, including “The Vagina Monologues” and “Love Letters.” Her theater work led her to receive numerous awards and accolades, including the prestigious Los Angeles Drama Critics Circle Award.

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Personal Life and Public Work

In her personal life, Marta Kristen has been an avid supporter of social causes and community work. She is a dedicated advocate for mental health awareness and has worked with several organizations to raise funds for mental health research. She has also lent her voice to environmental campaigns and animal welfare efforts.

Kristen has enjoyed a prolific and exciting life outside the screen. Her resilience, creativity, activism, and entrepreneurial spirit continue to inspire and impress her loyal fans worldwide as she engages in various philanthropic and humanitarian activities.


1. What is Marta Kristen most famous for?

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Marta Kristen is most famous for her role as Judy Robinson in the hit sci-fi series “Lost in Space.”

2. What other acting roles has Marta Kristen played?

After “Lost in Space,” Kristen appeared in numerous television series, such as “The Love Boat,” “Hawaii Five-O,” and several movies.

3. Has Marta Kristen won any awards?

Yes, Kristen has won several awards throughout her career, including the Los Angeles Drama Critics Circle Award for her standout performance in “The Vagina Monologues.”

4. What does Marta Kristen do outside acting?

Kristen is a passionate advocate for mental health awareness, environmental campaigns, and animal welfare efforts.

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5. How many children does Marta Kristen have?

Marta Kristen has two children, Richard and Bianca Thinnes, from her first marriage to Roy F. Thinnes.

6. Did Marta Kristen continue acting after “Lost in Space” ended?

Yes, Marta Kristen continued her acting career outside of “Lost in Space,” appearing in numerous television series, films, and stage productions.

7. Who is Marta Kristen’s second husband?

Kristen’s second husband was a psychiatrist named Dr. Sumner F. Clickner Jr. The marriage ended in divorce.


Marta Kristen’s life and career have been a remarkable journey. She has entertained and inspired people worldwide with her exemplary acting skills, humanitarian efforts, and social activism. Her portrayal of Judy Robinson on “Lost in Space” served as a catalyst for changing the way female characters were portrayed on television. Today, she continues to be a proud advocate for various social causes and remains an example of resilience, strength, and creativity. Discovering and celebrating the enigmatic Marta Kristen has been a great joy. We hope you found this journey as engrossing as we did.

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