Just as Earth’s land surface has enormous peaks and valleys, the oceanic world has similarly varied topography. Perhaps the most intriguing of these features is the Mariana Trench — a chasm in the ...

This astronaut just successfully reached the lowest point on Earth. Kathy Sullivan soared to new heights when she became the first American woman to walk in space in 1984. On Monday, she broke a new ...

We see a boat on the water and a deep ocean trench below it. The deepest depths of the sea are found in the crescent-shaped Mariana Trench, located in the western Pacific Ocean. But what is the ...

Just eight people have reached Challenger Deep, the deepest point of the ocean. More than 550 people have visited space. But only one person has done both: Kathy Sullivan. On Sunday, the NASA ...

Situated in the enormous Pacific Ocean, the Challenger Deep is the lowest point on our planet. Found along the Mariana Trench ...