Could a Giant Parasol in Outer Space Help Solve the Climate Crisis?

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https://www.nytimes.com/2024/02/02/climate/sun-shade-climate-geoengineering.html

By Cara Buckley, The New York Times. 

Excerpt: The idea is to create a huge sunshade and send it to a far away point between the Earth and the sun to block a small but crucial amount of solar radiation, enough to counter global warming. Scientists have calculated that if just shy of 2 percent of the sun’s radiation is blocked, that would be enough to cool the planet by 1.5 degrees Celsius, or 2.7 Fahrenheit, and keep Earth within manageable climate boundaries. ...To block the necessary amount of solar radiation, the shade would have to be about a million square miles, roughly the size of Argentina, Dr. Rozen said. A shade that big would weigh at least 2.5 million tons — too heavy to launch into space, he said. So, the project would have to involve a series of smaller shades. They would not completely block the sun’s light but rather cast slightly diffused shade onto Earth, he said. ...The sunshade idea has its critics, among them Susanne Baur, .... A sunshade would be astronomically expensive and could not be implemented in time, given the speed of global warming, she said. In addition, a solar storm or collision with stray space rocks could damage the shield, resulting in sudden, rapid warming with disastrous consequences....

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