Fireball XL5 FHD 1962 S01E02 •

Episode: The Doomed Planet. The Fireball XL5 narrowly misses a planet that has broken out of its orbit and they realise the planet is on a collision course for the planet, Membrono. After concluding the planets are uninhabited, Steve realises he saw a flying saucer. After the ship lands at Venus' house, the XL5 is lured back to save the planet Membrono from destruction.