Outstanding ideas to save the planet.

We have a new crazy idea to combat global warming, of course it is not an occurrence or a crazy idea from anyone, the author is István Szapudi's astronomer from the Institute of Astronomy at the University of Hawaii.

The document is titled managing solar radiation with a sunscreen attached and it has been published in a scientific journal, which is not to say that it is not a crazy idea, but it is a crazy idea on a more sophisticated level argued and with astronomical calculations. so it is worth paying attention to it, since perhaps we can learn something from it.

Or at least it can serve as the basis for plans in the distant future, I remind you that Leonardo Da Vinci's projects to fly were crazy and unrealizable ideas for their time, but they served as inspiration for The Pioneers of Aviation.

The proposal that István proposes to save the world is to create a solar shield that would reduce the amount of sunlight that reaches the earth, the shield would be tied to an asteroid that would be captured to use as a counterweight and although the solar shield sounds very crazy It is not new, similar things have already been proposed, in fact a few months ago scientists from the Harvard and Smithian Center for Astrophysics and the University of Utah proposed creating a layer or cloud of lunar dust in space, in order to reduce the amount of sunlight that the earth receives from the Sun and thus lower the temperature of the planet.

The problems with this idea are several. To begin with, this cloud of dust would gradually dissipate due to the action of the solar wind, with which a mining factory should be created on the moon to be able to periodically supply material to that cloud of dust. add that dust particles can end up invading Earth's orbit creating a shower of micro meteorites that end up destroying our satellites and space stations.

It is not the first time, as I say that it is proposed to create a layer, the layer has the advantage that it would not create micro meteorites, a solid layer that could also remain in space much longer, but just like the cloud of dust, a layer it would suffer the push of the solar wind that would end up taking it out of orbit, the only way for the layer not to be altered by the solar wind would be for it to be very massive and that would be technologically and economically impossible right now for all of humanity.

The advantages of István's proposal is that the layer would reduce solar radiation by 1.7%, according to the astronomer it would be the amount necessary to avoid a catastrophic increase in global temperatures, the second advantage is that by using the counterweight asteroid avoid having to create a Solid and Heavy shield, the astronomer calculated that the mass of the shield and asteroid should be about 3.5 million tons that is about 100 times lighter than previous shield estimates, 3.5 million tons is a astronomical amount but it must be taken into account that 99% of that weight corresponds to the asteroid and the shield It would only be 1%, that is to say some 35,000 tons, and it is still a gigantic amount, at this point is where István's plan is it begins to complicate a lot.

For reference, the international space station has a mass of about 455 tons so it should be sent into space about 77 times the mass of the international space station, the most powerful rockets can send about 50 tons more or less into space what What it would mean to send 700 rockets, 700 launches we could also count on NASA's SLS rocket, it can carry a little more cargo, but each launch costs about 2,000 million euros, even though large rockets can be manufactured in an industrial chain in order to lower costs , we would continue talking about amounts close to or greater than a trillion euros.

At this point we would be in the technologically possible part, very expensive but possible, because from here we enter the area of ​​the István plan where we do not have the technology to carry it out, we have the technology to hit an asteroid as demonstrated by the Dart mission of the NASA but, we do not have technology, nor do we even know how to capture an asteroid and direct it to the orbit we want.

And finally, we do not have the technology to manufacture long resistant and light ropes to be able to attach the shield to the asteroid, perhaps it could be achieved with graphene straps, but there are still many years of research to achieve something similar and especially on such a huge scale. For all these reasons, we better keep István's idea in the drawer of fantastic projects because we may need it one day in the future, but at the moment it is unfeasible.

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