Alien, Event Horizon, and Pandorum are all among the absolute most terrifying sci-fi and horror movies set in space.

June Lockhart, beloved for her roles in "Lassie" and "Lost In Space," has died at 100. She died Thursday of natural causes at her Santa Monica home.

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. She was 100.Related video above: ...

SANTA MONICA, Calif. -- 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. She was 100 ...