A portion of ancient oceanic crust that sits atop Albania and hosts one of the largest chromium mines on Earth also contains a huge hydrogen reservoir, offering a potential source of clean energy.
Fresh water that trickled down into Earth's crust 6 million years ago became trapped thousands of feet beneath the Hyblaean Mountains in Sicily, forming an aquifer that has not budged since.
Liftoff to the distant asteroid is scheduled for Oct. 5, 2023 – the beginning of a six-year journey to one of the most unusual objects in the solar system.