Naval officers and merchant marines report strange glowing seacraft that are like nothing else on earth.; A group of scientists translate some mysterious discs found in a cave.; A scientist believes that the Yeti may be space aliens.; Astronauts observe strange phenomena near the moon.; How radio telescopes are used to look for signs of life in outer space.; Flying saucers appear over Vera Cruz.; Short feature about the importance of whaling vessels in the 19th century.; Gags about a motorcycle rider and a bricklayer.; Possible origins of UFOs.