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 ...

Bill Nelson retires as NASA administrator; Janet Petro steps in as acting chief, awaiting Jared Isaacman’s confirmation.

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

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

NASA employees received a memo from acting agency administrator Janet Petro, Wednesday, mandating the closure of all ...

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

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

The second Trump administration started with soaring rhetoric about sending humans to Mars but confusion about who was leading NASA on an acting basis.

"Once again, the temperature record has been shattered — 2024 was the hottest year since record keeping began in 1880." ...

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

Robert Cabana, a NASA associate administrator, astronaut, and a colonel in the United States Marine Corps, received the ...