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 ...

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 ...

Dylan Taylor holding a mission patch for STS-51L, the last mission of Challenger at the bottom of the Challenger Deep. Source: Dylan Taylor Last summer I had a chance to visit one of the most remote ...

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 ...

Kathy Sullivan, an American geologist, has made history again. This past week, she became the first woman to reach Challenger Deep - that's the deepest point on the surface of the Earth. It's in the ...

The submersible vehicle currently lost at sea is part of a relatively new effort enabling tourists and other paying customers to explore the depths of the ocean, the vast majority of which has never ...