Woman Astronaut becomes First Human to Walk In Space and Reach Deepest Part of Ocean First Woman to Reach the Bottom of Challenger Deep Dr. Kathy Sullivan, a former NASA Astronaut, a veteran of three space shuttle flights, and the first American woman to walk in space, just set another record in history as she becomes the first woman to reach the bottom of the Challenger Deep, the deepest point in the ocean. And yet as if this most recent achievement is not enough, according to EYOS Expeditions, another record she now holds is being the first human to have … Continue reading Woman Astronaut becomes First Human to Walk In Space and Reach Deepest Part of Ocean