Noah no Uchuusen(1985)

Noah no Uchuusen

Joey was the head pilot of the space ship. His life was endangered while fixing the ship's engine. The crew had to temporarily delete part of Joey's memory in order to save him. Joey became the 14 year old he once was. He longed for Earth, the ranch, and Beauty, his little pony. He couldn't understand how he could have left all that behind and hopped on a space ship...