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.

In a letter addressed to the next NASA administrator—who, if Trump’s nomination is confirmed, will be Shift4 CEO and SpaceX ally Jared Isaacman—Nelson highlighted the space agency’s work during his ...

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

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

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

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

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

NASA administrators are also accountable to elected officials. Administrators are appointed by the president but must be confirmed by the Senate. Congress has a great deal to say about the budget that ...

Weather organizations from around the world agree that the planet's average global surface temperature in 2024 could well ...

Donald Trump's executive order calls for the federal government to define sex as only male or female and for that to be reflected on official documents such as passports and policies such as federal ...