The First American To Walk On Mars — Grok/Astrobiology.com As we prepare for a future first mission to Mars with a human crew, the United States, under the Outer Space

Golden Dome Cave (2,229 ft / 679 m) One of the “Moderately Challenging Caves.” — National Park Service We report the draft genome sequence of a member of a potentially

The Materials International Space Station Experiment (MISSE) Flight Facility on the exterior of the space station exposes materials to the harsh environment of space. — NASA Materials in low Earth

A miniature black smoker – The syringe injects the sulfidic fluid into the iron-rich solution in the vial. This precipitates a black iron-sulfide membrane. © Vanessa Helmbrecht The very first