In 2367, Ensign Wesley Crusher performed an experiment aboard the USS Enterprise-D based on Kosinski's warp equations, wherein he created a warp bubble within the warp drive of the Enterprise. The bubble remained roughly stable at a field distortion level of 1,283 × 3,695 millicochranes. During the experiment, Wesley's mother, Doctor Beverly Crusher, became trapped inside the warp bubble. She was essentially caught in her own parallel universe, where her thoughts at the very moment she was trapped shaped her reality. As Dr. Crusher's thoughts were of losing old friends, her reality manifested itself as one where the crew of the Enterprise disappeared one by one, eventually leaving her alone.