Star Trek: The Next Generation Season 4 Episode 1

In the scene where the Borg engage the Martian defense force, the camera starts on three ships approaching, with Mars in the background. The camera pans around to follow the ships, which are then destroyed by the advancing Borg cube. Then the camera pans back to its original position, keeping the Borg cube in frame as it flies past. But when the camera reaches its original angle, Mars has disappeared.