Weird sound in the shuttle
Okay, I KNOW NOTHING ABOUT THIS, so someone please explain to me what the booming sound is you hear in the shuttle while they are in orbit. You hear it after the music calms down after they have watched the "amazing sunset." You can also hear it while Andie is getting strapped in the MMU in the Cargo Bay. It sounds like something is hitting them, so what is it?? Does anyone know??