Space Shades: Humanity's Last Hope | Answers With Joe
Why Hacker News recommends it
Linked as a worked look at the maths and assumptions of orbital sunshades, which concludes they are impractical.
What it is
Joe Scott takes a serious look at space sunshades as a climate fix, asking how big they would need to be, what they would cost and whether they would work. He draws on Roger Angel's paper and launch options.
Recommended by 1 HN commenters across 1 different months, 2020 to 2023.
What Hacker News said
Recommends laweijfmvo · 2023-12 · on “Scientists want to put a 'sunshade' in orbit to fight climate change”
Since the article doesn't talk about the fun details: [this video] , talks about how big it would need to be, among other things.
Cites pas · 2020-09 · on “Mars Problems vs. Venus Problems”
Solar shades the expensive way (as in right now, launch from Earth): [this video] After kickstarting a Lunar economy so you can manufacture and launch them well outside Earth's gravity well: [LINK]
Cites flukus · 2021-01 · on “Earth is losing ice faster today than in the mid-1990s, study suggests”
Here's a video of someone going through the maths and their various assumptions: [this video] TLDR: It's preposterous in just about every way, from the number of shades needed to the costs to the number of launches required.