Why a Tent on Mars Beats a Full-Blown Planetary Makeover ⚡ экспресс
Scientists have calculated whether Mars could be made warm and breathable. It turned out to be like trying to fill an ocean with a garden hose: staggering reserves of gases and energy are needed. Instead, it's more realistic to create enclosed oases. Why chase an entire planet when you can start small?
Today's Martian surface is a cold, nearly airless home. Many dream of a full renovation: warming the planet, filling it with air from carbon dioxide and nitrogen. But researchers have crunched the numbers: such a 'makeover' would require space mirrors that capture sunlight and stretch over an area the size of Africa just to melt the polar caps, plus factories pumping out gas for a thousand years. Even just making the air breathable demands energy that humanity produces over centuries. And that's only half the problem: without a magnetic field, Mars would quickly lose its new atmosphere to the solar wind.
Fortunately, instead of rebuilding the whole house, we can pitch a large tent in the best room. Domes over valleys or craters let us create an Earth-like climate in a small area. This approach is already feasible and requires far fewer resources. People could live and work inside, and even explore the planet without a full spacesuit — only needing protective gear when stepping outside.
🎯 Without a magnetic field, any new Martian atmosphere would be stripped away by the solar wind in just a few million years — a blink of an eye on geological time scales.
🎬 Fans of Kim Stanley Robinson's Mars trilogy will recognize this theme — from the first domes to the grand attempts at full terraforming.