Scientists have recently proposed an innovative method to warm Mars by injecting engineered nanoparticles into its atmosphere. These particles, similar in size to commercially available glitter and made of iron or aluminum, would trap escaping heat and scatter sunlight toward the Martian surface, enhancing the planet's natural greenhouse effect. This approach aims to raise Mars' surface temperature by approximately 28 degrees Celsius over a decade, potentially making it more hospitable for future human exploration. reuters.com
The proposed method involves continuously releasing tiny rod-shaped particles into Mars' atmosphere at a rate of about 30 liters per second. These particles would remain suspended in the atmosphere for up to ten years, effectively warming the planet and initiating a feedback loop that could lead to the melting of subsurface ice. This technique is considered more efficient and feasible compared to previous concepts that relied on releasing large amounts of scarce greenhouse gases. science.org