Challenger Deep

Kathy Sullivan, age 68, a former NASA astronaut on multiple missions with the Space Shuttle and the first American woman to walk in space has successfully completed a mission to the lowest point on earth. By doing that she has become the first woman to reach the lowest point on earth, Challenger Deep inside the Mariana Trench around 10,9km below the surface. Sullivan is also the only person in the world to walk in space and reach the lowest point on earth.