Bill Nelson has stepped down as NASA administrator, ending a half-century of public service. Janet Petro is now the agency's ...

NASA Administrator Bill Nelson has left the building, and while President Donald Trump’s nominee awaits a confirmation ...

"America is leading humanity back to the Moon, onward to Mars, and into a golden age of space exploration," Nelson wrote, ...

The second Trump administration started with soaring rhetoric about sending humans to Mars but confusion about who was ...

On Jan. 12, 1986, shuttle Columbia lifted off on the final successful shuttle mission before the Challenger disaster.

NASA proposes a faster, cheaper plan to bring Mars samples to Earth, aiming for delivery by the 2030s while cutting costs ...

NASA's mission to return samples from Mars and potentially discover the first signs of alien life has a new timeline. The ...

An exploding budget and an unraveling schedule spell disappointment for NASA's mission to learn more about Mars's history.

NASA's James Webb Space Telescope has captured the infrared glow of an ancient supernova's light echo, revealing ...

With the revisions, Mars Sample Return is still expensive, but would be less than $8 billion. “That’s a far cry from $11 ...

On this date in 1986, Congressman Bill Nelson launches onboard Columbia on the final successful shuttle flight before the ...