It was a movie I saw probably 9 or 10 years ago & I only vaguely remember the plot. It was about a woman who was on some sort of NASA mission & believed she went to outer space & fell into a black hole, only to be told by her observers that she never left base. And I think the movie was about recreating that scenario to try to get back into the black hole (or wormhole, don't remember which) & find out what happened to her. Does anyone know what this movie was called? It's been bugging me for days.