In an English movie I watched a long time back (perhaps at least 15 years back, not sure), they try to build a machine that acts as portal to another world, but they're not sure of how it will work. It looked like a secret project. In that a woman pilot (or scientist) enters, and reaches a place unknown to humanity. After sometime, she's back and a committee of senior officers question her on her experience. If I remember correctly she had gone to a world not known to humanity or to some distant star system.
I don't remember name of any character or the movie name, but it looked awesome. Does anybody know the name of the movie?