June Lockhart, a shining star of America’s Golden Age of Television, has passed away at 100. The beloved actress, best known for her iconic roles in Lassie and Lost in Space, died peacefully on October 23, 2025, in Santa Monica, California, surrounded by her daughter June Elizabeth and granddaughter Christianna. Officials confirmed she passed from natural causes.

Born in 1925 in New York City to actors Gene and Kathleen Lockhart, June grew up in the spotlight. She made her stage debut at eight and appeared alongside her parents in the 1938 film A Christmas Carol. Her talent and charm soon made her one of Hollywood’s most beloved actresses.

Lockhart’s television career began in 1949, and she achieved lasting fame as Ruth Martin in Lassie. Later, she became the wise, steadfast matriarch Maureen Robinson in Lost in Space, a role that defined her for generations. Even in her later years, she continued acting, appearing in The Remake (2016) and Netflix’s Lost in Space (2021).

Tributes from fans and co-stars celebrated her warmth and professionalism. “She did it her way,” wrote co-star Bill Mumy. June Lockhart’s grace, talent, and light will continue to shine for generations to come.