Have Space Suit -- Will Travel

Clifford "Kip" Russell, a bright high school senior with an eccentric father, enters an advertising jingle writing contest, hoping to win an all-expenses-paid trip to the Moon. He instead gets an obsolete, but genuine, used space suit. Though a few make fun of him, with the help of sympathetic townspeople, and using his own ingenuity and determination, Kip puts the suit (which he dubs "Oscar") back into working condition.Kip reluctantly decides to return his space suit for a cash prize to help pay for college, but puts it on for one last walk. As he idly broadcasts on his shortwave radio, someone identifying herself as "Peewee" answers with a Mayday signal. He helps her home in on his location, and is shocked when a flying saucer lands practically on top of him. A young girl and an alien being (the "Mother Thing") debark, but all three are quickly captured and taken to the Moon.