Fossett had built a vessel that could “fly” to the deepest part of the ocean, making a record dive to the bottom of the planet. The Deep Space Challenger looks like an airplane, but it’s really a winged submersible. His goal was to dive to the bottom of the Mariana Trench, more than 37,000 feet below the surface.
The Deep Space Challenger would have flown to the bottom in 1 hour 40 minutes, and then rocketed back to the surface. The project was four weeks from in-water testing when Fossett’s plane went down. The project is now on hold.