You realize the Sunshade is science fiction, right?
Picking two examples from the Wikipedia article you linked, the Fresnel lens is a proposed object that would float in space between the Earth and Sun, approximately 1000 km wide and only a few mm thick. The article notes "at a science fiction convention in 2004, Benford estimated that it would cost about US$10 billion up front, and another $10 billion in supportive cost during its lifespan." Lol. This idea is pretty hilarious, just in general. A lens so wide as to span the entire US state of South Dakota. Please explain how you'll launch and/or assemble that at the L1 point. (This was a subplot of a Simpsons Episode by the way: https://en.wikipedia.org/wiki/Who_Shot_Mr._Burns%3F#Part_One)
Or there's the "Lightweight solution", "a distributed sunshade with a mass on the order of 100000 tons, composed of ultra-thin polymeric films and SiO2 nanotubes", which "estimates that launching such mass would require 399 yearly launches of a vehicle such as SpaceX Starship for 10 years." Also lol!
Picking two examples from the Wikipedia article you linked, the Fresnel lens is a proposed object that would float in space between the Earth and Sun, approximately 1000 km wide and only a few mm thick. The article notes "at a science fiction convention in 2004, Benford estimated that it would cost about US$10 billion up front, and another $10 billion in supportive cost during its lifespan." Lol. This idea is pretty hilarious, just in general. A lens so wide as to span the entire US state of South Dakota. Please explain how you'll launch and/or assemble that at the L1 point. (This was a subplot of a Simpsons Episode by the way: https://en.wikipedia.org/wiki/Who_Shot_Mr._Burns%3F#Part_One)
Or there's the "Lightweight solution", "a distributed sunshade with a mass on the order of 100000 tons, composed of ultra-thin polymeric films and SiO2 nanotubes", which "estimates that launching such mass would require 399 yearly launches of a vehicle such as SpaceX Starship for 10 years." Also lol!