Marta Kristen is a Norwegian-born American actress.

Lost in Space is an American science fiction television series, created and produced by Irwin Allen, which originally aired between 1965 and 1968 on CBS. The series was inspired by the 1812 Johann David Wyss novel The Swiss Family Robinson. The series follows the adventures of the Robinsons, a pioneering family of space colonists who struggle to survive in the depths of space. The show ran for 83 episodes over three seasons. The first season comprised 29 episodes that ran 1 hour apiece, filmed in black and white. In seasons 2 and 3, the episodes were 60 minutes long and shot in color.