You don't have to be a 'rocket scientist' [=you don't have to be unusually smart] to understand the instructions.
Sales 'rocketed' from 1,000 units last week to 5,000 units this week.
The job is challenging, but it's not exactly 'rocket science'.
(..) I'm sorry, Mr. Luthor. In the interview he says that the planet Krypton... ...exploded in . That ridiculous little freak... ...took three years in a rocket to get to earth. -Ergo.... -Ergo. Ergo , that's three years on. He's ' ", you know that? (..)1978 Superman
(..) Maybe he'll lead us to the big man himself. Lex Luthor? You got it, Aramus. We'll make Captain by midnight. Hey, what do you read? XK- rocket to be used. Hey, what do you read? -Hey, Matt. -Hi, Otis. Just getting a Daily Planet here. Okay. All right. (..)1978 Superman