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 Trump’s nominee awaits a confirmation hearing, the ...

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

In a letter to his replacement, outgoing NASA leader Bill Nelson emphasizes the agency’s activities ‘transcend the length of ...

The founder of SpaceX said President Trump had asked his company to return two astronauts aboard the space station to Earth ...

Renowned NASA astronauts Suni Williams and Butch Wilmore are still stuck in space at the International Space Station (ISS) ...

President Donald Trump asked SpaceX Founder Elon Musk to bring astronauts Butch Wilmore and Suni Williams back to Earth, ...

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

While Suni Williams and Butch Wilmore’s situation is unusual, their return trip will be pretty routine, as they were already ...

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

Earlier this month, outgoing NASA Administrator Bill Nelson and other agency officials presented two possible plans for the mission, known as Mars Sample Return, for the incoming administration.

Janet Petro will become the first female to lead NASA. She will replace the 14th NASA administrator, Bill Nelson. Here's all ...