Phys.org  February 8, 2023 A team of researchers in the US (University of Utah, Smithsonian Astrophysical Observatory) explored the potential of using dust to shield sunlight. They analyzed different properties of dust particles, quantities of dust and the orbits that would be best suited for shading Earth. They found launching dust from Earth to a way station at the “Lagrange Point” between Earth and the sun (L1) would be most effective. To achieve sunlight attenuation of 1.8%, equivalent to about 6 days per year of an obscured Sun, the mass of dust in the scenarios they considered must exceed 1010 […]