Former NASA astronaut and oceanographer Kathy Sullivan, who was the first American woman to walk in space, reached another milestone on June 7 by becoming the first woman to reach the lowest point on Earth.
Sullivan, 68, reached the deepest known spot in the ocean—known as the “Challenger Deep”—inside the Pacific Ocean’s Mariana Trench, after completing a 35,810-foot dive on June 7, according to EYOS Expeditions, which coordinated the mission’s logistics.
