The phased roadmap to landing humans on the Red Planet
In short: Mars is currently a world inhabited entirely by robots. To transition from robotic pathfinders to human explorers, NASA is executing a multi-stage strategy involving technology demonstrations on the International Space Station and hardware testing in the lunar proving grounds.
NASA's strategy for reaching Mars is structured in distinct phases. According to a report titled "Journey to Mars: Pioneering Next Steps in Space Exploration," the process begins with research and technology demonstrations aboard the International Space Station. This is followed by developing hardware and procedures within a proving ground located around the moon, creating a stepping stone before humans are sent to the Red Planet. This roadmap includes significant milestones, such as completing a rigorous critical design review for the Space Launch System. Furthermore, researchers are testing powerful five-segment solid rocket boosters to ensure mission success.
While robots currently lead the way, they are uncovering complex histories. The Curiosity rover, which is roughly the size of a small SUV, has been exploring Gale Crater for years. It has even reached a 1-kilometer elevation gain on Mount Sharp as of August 26, 2026. Beyond its physical movement, Curiosity has identified organic molecules in ancient mudstone that cannot be fully explained by non-biological processes alone. The rover's mission is supported by a sophisticated toolkit, including seventeen cameras and a laser for remote rock analysis. It also carries a specialized drill to collect powdered samples for study.
The logistical challenges of such a journey are immense. In 2015, NASA's Marshall Space Flight Center was focused on advancing critical systems, including the Space Launch System (SLS) rocket. This involved testing propulsion and life support, as well as utilizing advanced manufacturing like 3-D printing. These technologies are essential for surviving the inhospitable, bitter cold, and dry environment of the fourth planet from the Sun. To support these missions, NASA utilizes massive welding tools and advanced composite manufacturing robots. These innovations help build the lightweight components necessary for deep-space travel.
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Sources
- Summary by Intellect · source: Advancing the Journey to Mars on This Week @NASA – October 30, 2015
- Also: Mars - NASA Science
- Also: Mars Science Laboratory: Curiosity Rover - NASA Science
- Also: NASA — Marshall Space Flight Center 2015: Advancing Technology to Power NASA’s Journey to Mars - NASA
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