Iconic ’60s Child Actor Gives Health Update About His 100-Year-Old Co-Star originally appeared on Parade.

Lost in Space star Bill Mumy updated fans about his former castmate June Lockhart‘s health.

While speaking to ReMind Magazine in June 2025, Mumy, who played Lockhart’s character, Dr. Maureen Robinson’s son Will Robinson on the beloved CBS series, shared he keeps up-to-date with the Lassie actress. He said while Lockhart does not usually leave her home, she is in good health.

“I talk to her through her daughter. June is at home. She has two assistants. She’s still in her own home,” said Mumy during the interview. “She follows the politics, she reads the news, but she doesn’t talk on the phone and she doesn’t — obviously — she’s not going to put on all her makeup and go out and do a convention or anything anymore, but she’s, well, she’s fine. She’s healthy.”

In addition, Mumy shared how he and his Lost in Space co-stars used to celebrate their birthdays while the show was on air from 1965 to 1968. According to Mumy, he and Angela Cartwright, who played Will’s sister, Penny, “were always celebrated on set with cakes and stuff because [they] were kids.”

“The rest of us, we knew people’s birthdays and throughout all of the decades sent birthday cards and calls and things like that. It’s always been and continues to be a real kind of unconventional family. Everybody got along really well,” said Mumy to the publication.

Mumy took to his Instagram account to celebrate Lockhart’s 100th birthday on June 25. The post featured several pictures of the actress throughout her decades-long career.

“Happy 100th Birthday to the Mighty JUNE LOCKHART today!! What a gal! She is truly special! Onward. 👍👍✌️❤️❤️❤️,” read the post’s caption.

Several fans showered Lockhart with well-wishes in the comments section.

“Happy 100th birthday to June Lockhart. We love you! 😍,” wrote a commenter.

“Happy Birthday to June! She is a fine actress. I watched her growing up on Lassie, LIS and film! Many more dear lady! 🎂,” added another.

“A true national treasure! Happiest of birthdays to June! 🥳,” shared a different fan.

Iconic ’60s Child Actor Gives Health Update About His 100-Year-Old Co-Star first appeared on Parade on Jun 26, 2025

This story was originally reported by Parade on Jun 26, 2025, where it first appeared.