I recently participated in a three-week-long, National Science Foundation-funded research cruise to the Mariana Trench. Our target was an east-to-west transect starting near Guam, over the Challenger ...

Thirty-six years after becoming the first American woman to walk in space, Kathy Sullivan has made history yet again. On Sunday, the 68-year-old oceanographer and former NASA astronaut became the ...

Add Yahoo as a preferred source to see more of our stories on Google. Just as Earth’s land surface has enormous peaks and valleys, the oceanic world has similarly varied topography. Perhaps the most ...

Add Yahoo as a preferred source to see more of our stories on Google. Mariana Trench. the deepest point of the earth. We see a boat on the water and a deep ocean trench below it. The deepest depths of ...

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 ...

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 ...

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 ...

(CNN) — 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 ...