She was born in Mooi River, Natal. She studied meteorology and music in England, and learned to fly light aircraft. After reading George Adamski's Flying Saucers Have Landed (1953) and Inside the Space Ships (1955), Klarer suddenly "remembered" that she had been receiving occasional "telepathic" messages from a friendly space alien named Akon since childhood. Akon was presumably unrelated to Adamski's Venusian space friend Orthon. She was able to take photos of the ship from the Drakensberg Mountains on July 17, 1955. This was a similar arrangement to that made by Adamski with Orthon in 1952.

Klarer managed to call down Akon and his scout ship in April 7, 1956, for an actual landing. She was carried up to the mother ship in earth orbit, and--- now the story becomes somewhat different from the mid-1950s contactee standard--- was eventually transported in 1957 to Akon's home planet, Meton, orbiting in the nearby multiple-star system Alpha Centauri, where she and Akon had sex, she became pregnant, and eventually delivered a male child. Her son, Ayling, stayed behind on Meton to be educated, while Klarer came home. The whole process, trip, lovemaking, pregnancy, delivery and return trip, supposedly required less than four months. Klarer took far more time before publishing a book, Beyond the Light Barrier (1980), about her extraterrestrial adventures. On his world lecture tour in the late 1950s, George Adamski made a point of visiting South Africa and looking up Klarer for a chat on their variety of experiences with the friendly, wise "Space Brothers." By that time, Klarer was not the only Adamski follower to experience claimed space-motherhood, because in 1957 British housewife Cynthia Appleton was revealing that one of Adamski's handsome blond Venusian Space Brothers had seduced her and gotten her pregnant. The resulting son, Matthew, has not been available for comment to date. Elizabeth Klarer died in 1994 in South Africa.

Elizabeth Klarer is mentioned in the song Even Elizabeth Klarer off the album Shakey is Good (2008) by South African singer-songwriter Jim Neversink.