Explorers descended into a 500-foot-deep cave—only to find something even more mysterious below: a perfectly blue, seemingly bottomless hole. Learn what makes this rare geological formation so ...

This computer-generated image of the Blue Abyss pool features a heavy-lifting ... recreation and research and training for space and deep-sea missions. UKSpace, a trade association representing ...

And Alvin isn't through yet. Its upgrades are expected to yield even more surprising discoveries that will lure scientists toward the deep blue abyss.

The Chinese company Deep Blue Aerospace is getting into the space tourism business. Deep Blue, which is based in the eastern province of Jiangsu, announced on Wednesday (Oct. 23) that it plans to ...

Under the blue waters of ... section of the Banda arc "The abyss has been known for 90 years but until now no one has been able to explain how it got so deep," says Jonathan Pownall, a researcher ...