Lassie and Lost In Space star June Lockhart dies aged 100

June Lockhart, right, who played the character of Ruth Martin, mother of Timmy Martin, played by Jon Provost, left, during the classic series Lassie, poses for a photograph with Lassie during arrivals at CBS’s 75th anniversary celebration in New York in 2003 (Louis Lanzano/AP)

American actress June Lockhart, who became a mother figure for a generation of television viewers whether at home in Lassie or up in the stratosphere in Lost In Space, has died aged 100.

Lockhart died on Thursday of natural causes at her home in Santa Monica, family spokesman Lyle Gregory, a friend of 40 years, said on Saturday.