That idea is now off the table. On Friday, Oct. 9, NASA released its final call for private companies to build and run the station that replaces the ISS, and the agency intends to be a paying tenant rather than the landlord. The bids will tell you a lot about whether the commercial space economy can stand on its own.

NASA is preparing to explore deep craters on the moon, known as the Marius Hills pit, to determine if ancient underground caves could provide shelter for future astronauts.

Approved grants face extra reviews and delays, and observers fear a behind-the-scenes installation of proposed political reviews.

NASA astronaut and engineer Christina Koch will become the agency’s acting deputy chief engineer Nov. 1, bringing experience from two spaceflights and from a career developing and operating complex systems in some of the world’s most demanding environments.

NASA’s latest view of the Spider Crater in Australia reveals how an ancient impact and millions of years of erosion helped shaped this unusual crater.

Far less conspicuous is the global water crisis unfolding beneath our feet, though it is severe. That’s according to a recent study published in the journal Proceedings of the National Academy of Sciences.

US officials canceled NASA’s ambitious Mars Sample Return program, leaving potential evidence of ancient life sitting on Mars. Could China beat them to it?

From the North Carolina School of Science and Mathematics to NC State and a record-setting career in space, astronaut Christina Koch will draw on her engineering spaceflight experience as she becomes NASA’s acting deputy chief engineer.