From Decades Just 8 people have been reached Challenger Deep, the deepest point of the ocean. More than 550 people have visited space.
But only one person has done both: the deepest point of the ocean and space Kathy Sullivan.


Kathryn Dwyer Sullivan – an American geologist and a former NASA astronaut.
A crew member on three Space.
Shuttle missions, she was the first American woman to walk in space on October 11,1984.


Overall, the first female in the world to perform a space walk was Svetlana Savitskaya
USSR citizen
On her 1984 Soyuz T-12 mission she became the first woman to fly to space twice, and the first woman to perform a spacewalk. What is Challenger Deep Kathy Sullivan creates history


On June 7, astronaut and oceanographer Kathy Sullivan, who was the first American woman to walk in space in 1984, became the first woman and the 5th person in history to descend to the deepest known spot in the world’s oceans, called the Challenger Deep in the Mariana Trench, which is 7 miles below the surface of the Pacific Ocean.


Earth’s highest point – Mount Everest Deepest Point on Earth – Challenger Deep


The depression is named after the British Royal Navy survey ship HMS Challenger, whose journey of 1872-1876 made the first recordings of its depth of Ocean.


An underwater explosion (also known as an UNDEX) is a chemical or nuclear explosion that occurs under the surface of a body of water.
The detonation of nuclear weapons underwater was banned by the 1963 Partial Nuclear Test Ban Treaty and it is also prohibited under the Comprehensive Nuclear-Test-Ban Treaty of 1996.

The Baker nuclear test at Bikini Atoll in July 1946 was a shallow underwater explosion, part of Operation Crossroads tested by Russia. What is Challenger Deep Kathy Sullivan creates history