Jonas Brothers star Kevin Jonas has given up his dream of becoming a spaceman - because he's terrified just thinking about the prospect of floating away.

The pop star admits he grew up with his sights on the stars, but came back down to earth with a bump after a movie experience.

He says, "I watched a movie where a guy got disconnected from the other guys and floated off into space, and I went, 'That is not the way to go out'."