Could We Really Live on Mars?
- Ravichandran Harini
- 16 hours ago
- 2 min read
Ravichandran Harini, Jadetimes Staff
Imagine waking up nearly 225 million kilometres from home. Outside your window, the sky glows a dusty butterscotch, the ground is the colour of rust, and the air outside would kill you in minutes. This is Mars, humanity's most tantalising off-world address. But could people actually survive there, not just visit?
Mars earns its reputation as the best candidate for human settlement mostly by process of elimination. A day lasts 24 hours and 37 minutes, close enough to Earth's rhythm to matter. Its axial tilt gives it seasons. Beneath the surface, and even at the poles, lies frozen water, a resource that could one day supply drinking water, oxygen, and rocket fuel. Yet the differences are staggering. Gravity is just over a third of Earth's. The atmosphere, thin and mostly carbon dioxide, cannot be breathed and offers almost no protection from radiation or heat. Average temperatures hover around minus 60 degrees Celsius.
That last point turns out to be the biggest obstacle. Without a global magnetic field or thick atmosphere, Mars offers little shielding from cosmic rays. NASA's Curiosity rover has measured surface radiation doses that would add up to roughly one sievert over a round trip mission of about 500 days on the surface, far above the career limit set for astronauts. Add to that the challenge of manufacturing breathable oxygen, growing food in low light and toxic soil, ferrying supplies across a journey of many months, and the psychological toll of isolation and confinement, and the scale of the task becomes clear.
Even so, momentum is building. NASA's Moon to Mars programme is testing habitats and life support systems. SpaceX is developing its reusable Starship vehicle specifically with Mars transport in mind. The European Space Agency is researching radiation shielding and in-situ resource utilisation, technology that would let settlers make oxygen, water, and fuel from local materials rather than hauling everything from Earth. International researchers are trialling closed-loop greenhouses and simulated Mars habitats right here on Earth.
None of this guarantees success. Living on Mars will demand decades more innovation, immense international cooperation, and extraordinarily careful planning. But the fact that serious scientists, engineers, and agencies are working the problem, piece by piece, suggests that humanity's oldest science-fiction dream is slowly becoming an engineering roadmap.
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