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 need your help. I can't help. I can't help anyone. Why, sure you can, Buzz. You can get me outta here. Then I'll get that rocket off you, and we'll make a break for Andy's house. Andy's house, Sid's house. What's the difference? Oh, Buzz. You've had a big fall. You must not be thinking clearly. (..)1995 Toy Story
(..) Things were just the way they should be When from out of the sky like a bomb Comes some little punk in a rocket Now all of a sudden some strange things are happening to me Buzz Lightyear to the rescue! Strange Things are happening to me (..)1995 Toy Story