NASA needs people who want to go to Mars.

And although the agency already received over 18,000 applications for its most recent class of astronauts, it's still recruiting for what is, frankly, a dream job.

On Tuesday, NASA released eight posters in a retro-propaganda style highlighting different roles that would be needed on the journey, such as farmers, surveyors, and teachers.

The funky and cool posters were originally designed for an exhibit at the Kennedy Space Center in 2009. But as part of NASA's recent publicity push for its Mars mission, it's made them available for download for free.

"Mars needs YOU! In the future, Mars will need all kinds of explorers, farmers, surveyors, teachers . . . but most of all YOU! Join us on the Journey to Mars as we explore with robots and send humans there one day," exclaims the website.

Currently, NASA is hoping to be able to send humans to Mars in the 2030s. But it's got competition: Elon Musk, the founder of SpaceX and electric-car maker Tesla, hopes to send humans to the red planet by 2026.

You can see all of the posters below, or if you'd like to print one up for your office, school, or home, NASA is also making huge TIF files available from its site.

Check them out: