2023-10-27 05:30:00
“Stop global warming? It’s simple, just install a graaaand parasol in the space., your child tells you. And it is not the astronomer from the University of Hawaii (United States) István Szapudi who will contradict him! The latter himself is considering this solution to save humanity… The parasol would reduce the amount of light arriving on Earth and therefore lower temperatures. Enough to delight city dwellers who suffocate at the slightest heatwave! According to the researcher, it would be enough to reduce solar radiation by 1.7% to avoid a drastic rise in global temperatures.
But how can we hold an immense canvas between the Sun and the Earth, at the Lagrange point L1, where the gravitational forces of the two stars cancel each other out? Because the device must be both heavy enough for it to remain in this position but also light enough so that it can be sent from Earth without this being too expensive or too difficult to accomplish. In his article published at the end of July in the scientific journal Proceedings of the National Academy of Sciences, István Szapudi, to ensure the stability of the device, evokes a solution just as crazy as its basic idea… attaching it to an asteroid which would act as a counterweight.
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A 35,000 ton canvas
According to the scientist, the whole thing would weigh 3.5 million tonnes, a hundred times less than a non-captive shield. The parasol itself would represent only 1% of the total weight, or 35,000 tonnes, and would be launched directly from Earth. Problem is, currently, the largest launchers can only carry up to around 50 tonnes into low Earth orbit… Even if technological progress will take place in the coming years, István Szapudi seems extremely optimistic in thinking that his invention will make it possible to stop the global warming. The best way to slow it down, it should be remembered, is to drastically reduce our greenhouse gas emissions.
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