In the 1960s, the U.S. Navy was exploring the other "final frontier" -- the sea. A series of underwater habitats called "Sealabs" were constructed for scientific exploration on the ocean floor.

So, as the U.S. sees an uptick in crewed spaceflight operations, the military wants to make sure it can support astronaut retrieval at sea if needed. Members from several military outfits came ...

The veteran NASA astronauts removed radio communications hardware ... such as hydrothermal vents in the ocean floor, are called extremophiles, and the experiment could reveal which microorganisms ...

So, as the U.S. sees an uptick in crewed spaceflight operations, the military wants to make sure it can support astronaut retrieval at sea if needed. Staff Sgt. Nainoa Lehua, Human Space Flight ...

NASA astronaut Suni Williams has set a female spacewalk ... For nearly five-and-a-half hours, the veteran spacefarers removed radio communications hardware and swabbed the outpost's exterior ...

Suni Williams and Butch Wilmore, the two NASA astronauts who rode to the space station months ago on the Boeing Starliner, are slated to come home in late March. Also aboard the station are NASA ...

Two NASA astronauts working outside of the International Space Station on Thursday (Jan. 30) were able to finally remove a faulty radio communications unit, succeeding where two previous ...

The waning gibbous Moon is at lower right as the orbital outpost soared 262 miles above the Pacific Ocean. So how do things work on the ISS ... You can watch the space chat live as the students quiz ...

There will be a gala Hall of Fame event to induct Whitson, and fellow astronaut Bernard Harris, at the Kennedy Visitor Complex on May 31st, beneath the retired Space Shuttle Atlantis.

Students in the NASA and radio clubs have dreams of being astronauts or engineers. Rosander said she hopes the hands-on experience inspires them to achieve those goals. “When kids are curious ...