The US space agency NASA has just released a series of retro-themed job ad posters aimed at luring interested applicants to work in Mars.

The World War I-styled recruitment posters was first commissioned back in 2009 for an exhibit at Florida's Kennedy Space Center Visitor's Complex. The retro colorful artworks advertise a raft of occupations needed in man's first attempt to colonize a neighboring planet including farmers, surveyors, and teachers.

"Have you ever asked the question, what is out there? So have we!" one poster caption reads as quoted by Economic Times. "That curiosity leads us to explore new places like Mars and its moons, Phobos and Deimos. Just what lies beyond the next valley, canyon, crater or hill is something we want to discover with rovers and with humans one day too."

Although NASA is still working on a number of details for such an ambitious, daring, and expensive endeavor, the space agency hopes that the posters will do much help in popularizing sci-fi fantasies of deep space exploration and, possibly, the colonization of the red planet sometime in the 2030's.

This is not the first time that the US space agency promoted the use of retro-styled colorful advertisements to sell the idea of life outside the comfort of our own planet. Last February, NASA published a series of printed ads showcasing how an intergalactic travel to distant planet feels like.

As per Smithsonian Magazine, space tourism posters known as "Visions of the Future," were made by artists working at the space agency's Jet Propulsion Laboratory (JPL) design studio. The space tourism ads feature distant planets that NASA scientists have long identified over the years and offer a slew of activities for space tourists while vacationing there.

One of the possible activities offered to space tourists while on the trip include experiencing super Earth HD 40307g high-gravity, staying at Cloud 9 observatory on Venus, water mining on dwarf planet Ceres, aurora gazing at Jupiter, and water world exploration beneath Europa's (one of Jupiter's moons) frozen surface, Tech Times reported.

The recently released job posters and space tourism ads look incredibly fun but they also serve a much higher purpose of raising awareness and inspiring a new frontier spirit in an era where deep space exploration is no longer a wild childish fantasy.

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