Hey, I found this page, its the Marine Corps astronaut program, but I'm sure its similar to the Navy's.
https://lnweb1.manpower.usmc.mil/manpower/mi/mra_ofct.nsf/MMOA-3/Astronaut+Application
Heres some requirements for the mission specialist. (I'm assuming you're trying to be an NFO, and not a pilot. Therefore you'd be a mission specialist.) There are different requirements for pilot astronauts.
Theres a lot more info on the page, so just look...
Mission specialist astronaut candidate minimum
qualifications are:
(1) Bachelor’s degree from an accredited institution in
engineering, biological science, physical science, or
mathematics. Degree must be supplemented by at least 3 years
2
MCO 3700.3A
5 Sep 96
related, progressively responsible, professional experience. An
advanced degree is desired and may be substituted for part or all
of the experience requirement (master’s degree = 1 year, Ph.D.
degree = 3 years). Quality of academic preparation is important.
(2) Ability to pass NASA Class II space flight physical
(similar to military flight physicals) to include the following
specific standards:
(a) Distant visual acuity: 20/200 or better
uncorrected; correctable to 20/20 each eye.
(b) Hearing loss and blood pressure: same as for
pilot astronaut candidates.
(3) Height between 58.5 and 76 inches.
(4) Be a U.S. citizen on active duty in the Marine Corps
with a minimum of 5 years active service.
https://lnweb1.manpower.usmc.mil/manpower/mi/mra_ofct.nsf/MMOA-3/Astronaut+Application
Heres some requirements for the mission specialist. (I'm assuming you're trying to be an NFO, and not a pilot. Therefore you'd be a mission specialist.) There are different requirements for pilot astronauts.
Theres a lot more info on the page, so just look...
Mission specialist astronaut candidate minimum
qualifications are:
(1) Bachelor’s degree from an accredited institution in
engineering, biological science, physical science, or
mathematics. Degree must be supplemented by at least 3 years
2
MCO 3700.3A
5 Sep 96
related, progressively responsible, professional experience. An
advanced degree is desired and may be substituted for part or all
of the experience requirement (master’s degree = 1 year, Ph.D.
degree = 3 years). Quality of academic preparation is important.
(2) Ability to pass NASA Class II space flight physical
(similar to military flight physicals) to include the following
specific standards:
(a) Distant visual acuity: 20/200 or better
uncorrected; correctable to 20/20 each eye.
(b) Hearing loss and blood pressure: same as for
pilot astronaut candidates.
(3) Height between 58.5 and 76 inches.
(4) Be a U.S. citizen on active duty in the Marine Corps
with a minimum of 5 years active service.