NASA’s first female astronaut candidate, pilot Jerrie Cobb, has died.

Cobb died in Florida at age 88 last month. News of her death came Thursday from journalist Miles O’Brien, serving as a family spokesman.

In 1961, Cobb became the first woman to pass astronaut testing. Altogether, 13 women passed the arduous physical testing and became known as the Mercury 13. But NASA already had its Mercury 7 astronauts, all test pilots and men.

FILE - This May 26, 1961 file photo shows Jerrie Cobb, the nation's first female astronaut candidate, with a display of rockets at a national conference where the leading space experts gathered in Tulsa, Okla. (AP Photo/William P. Straeter)
FILE – This May 26, 1961 file photo shows Jerrie Cobb, the nation’s first female astronaut candidate, with a display of rockets at a national conference where the leading space experts gathered in Tulsa, Okla. (AP Photo/William P. Straeter)

None of the Mercury 13 ever reached space.

Cobb served for decades as a humanitarian aid pilot in the Amazon jungle. She emerged in 1998 to make another pitch for space, as NASA prepared to launch John Glenn on shuttle Discovery at age 77. Cobb argued unsuccessfully that the research should include an older woman.

FILE - In this May 4, 1961 file photo, Jerrie Cobb of Oklahoma, the first woman to undergo tests for space travel, stands beside her jet fighter. (AP Photo)
FILE – In this May 4, 1961 file photo, Jerrie Cobb of Oklahoma, the first woman to undergo tests for space travel, stands beside her jet fighter. (AP Photo)
FILE - In this March 13, 1962 file photo, Jane Hart, left, wife of Sen. Philip Hart, D-Mich., and Jerrie Cobb of Oklahoma City pose with a model of a Saturn rocket at Capitol Hill in Washington. (AP Photo/Henry Griffin)
FILE – In this March 13, 1962 file photo, Jane Hart, left, wife of Sen. Philip Hart, D-Mich., and Jerrie Cobb of Oklahoma City pose with a model of a Saturn rocket at Capitol Hill in Washington. (AP Photo/Henry Griffin)
In this 1995 file photo, members of the FLATs, also known as the
In this 1995 file photo, members of the FLATs, also known as the “Mercury 13,” gather for a photo as they attend a shuttle launch in Florida. (NASA via AP)