... Liberty Bell 7 . ... Credit Copyright: Courtesy NASA Explanation: Today, the space capsule Liberty Bell 7 rests about 3 miles below the surface of the Atlantic Ocean. ... Grissom's flight was suborbital - like fellow Mercury astronaut Alan Shepard's first flight - however his capsule was different, with a window, a new manual spacecraft control system, and an explosive hatch. ... Publications with keywords: spacecraft - Mercury program - astronaut . ... A Landslide on Asteroid Vesta . ...