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

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, ...

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

NASA’s 1st woman acting administrator, Janet Petro, is leading the charge in space exploration. Learn how her career ...

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

Janet Petro has been appointed as the acting administrator of NASA, the US space agency announced after President Donald ...

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

传统上，任命NASA局长并非新一届总统政府的首要任务。尽管内阁级职位的提名往往在就职日前数月便已公布，但NASA局长的人选却常常拖延数月。乔·拜登总统在2021年3月提名比尔·纳尔逊（Bill ...