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 ...

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

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

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

President Donald Trump made a bold promise to America minutes after taking the Oath of Office: pledging that an American flag ...

During his inaugural address, President Donald Trump said he wants 'American astronauts' on Mars. Where does a future Mars mission currently stand?

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

A collection of Martian rocks could reveal details about potential past life on the Red Planet – but first NASA has to get ...

SpaceX suspects a fire may have caused its Starship to break apart during liftoff and send trails of flaming debris near the ...