A Historical Space Fuckup
Geostationary satellites. You know the ones, right? Hanging out 5.6 Earth radii above the Equator and sending us cat videos and premium TV channels? Let me tell you about their worst few years.
Background: GEO satellites are just big fat bent pipes. They take a weak signal from the ground, amplify the fuck out of it, and send it back. The amount of dollars you can make doing this is related to the total power of the amplifiers, so everyone making money like this wants more power. How do you get more power in space? Bigger solar arrays. What's the catch? Bigger solar arrays are more expensive: your 15kW solar array might cost you ten million dollars. Bigger solar arrays also mean a satellite that costs more fuel to control, and running out of fuel is the primary way these satellites die (and stop making you money). So everyone's looking for cheat codes here.
1999. Hughes Satellite Systems (just before it's bought by B̷̧͛o̶̹̕ẻ̴̙i̴̩̓n̴͎͆g̵͉̈) develops a really mass-/cost-efficient way to make the solar arrays bigger: trough concentrators. Instead of adding more solar panels, instead they'll add cheap, lightweight, super-reflective panels that redirect more sunlight onto the existing solar panels! This increases the amount of light hitting the solar panels (++power), while also increasing their temperature (-power), but they did the math, it's positive, let's launch some concentrators.
Let us digress for a second. Space is a vacuum (citation needed). In our Earthbound experience, a lot of matter stays where you put it because atmospheric pressure is keeping it there. In space, some materials start to escape much faster, but other materials stay in place. Spacecraft solar arrays are made of semiconductor (stable), glass (stable), copper (stable), aluminum (stable), and glue (INCREDIBLY VOLATILE). Oh also, the glue is selected to be really clear, but it stays that way only because it's usually hidden behind something. When direct sunlight hits it, it turns SUPER BROWN. Brown doesn't let sunlight through it.
What happens to a molecule when it starts to fly free? It picks a direction to go and flies that way until it hits something, where it maybe condenses and stays put. When the solar panels are flat, this is fine, because most directions have nothing to hit:
However, with trough concentrators, a large fraction of the glue hits one of the concentrator panels and stays there... and then some fraction of that glue evaporates, hits the solar panel, and stays there (but browner):
Oh, okay, yeah that's worse. Spacecraft that were supposed to lose 5% of their power over 15 years instead started looking like they were going to lose 20% of their power in that time period, meaning you can't keep the TV channels running, meaning you can't make any goddamn money! Very embarrassing for Hughes (/Boeing). They launched 6 satellites with this issue before they noticed the problem and started freaking out. "Freaking out" in this case means almost bankrupting the people they'd sold satellites to, and nearly exploding themselves.
My aunt started working at Hughes during this timeframe and was given a commemorative pin for the satellite she was working on. Six months later, they asked everyone to please give back the commemorative pins; the company urgently needed to fix a design issue with the satellite that would change how the pin looked. My aunt kept her old pin, which... still had the concentrators in place :)
Anyway, right around this same time, the National Reconnaissance Office (NRO, whose existence was classified at the time), had exactly the same issue on some of its satellites, as far as I can tell. NRO also freaked out about it, and because they're the government, they started an annual conference with all of the country's high-clearance solar power experts to help them figure out what the fuck was going on. That conference slowly got less and less classified over the years, and my wife was invited to speak at it this year! There were a couple of graphs presented by government speakers that lampshaded the Late Nineties Concentrator Fuckup, but absolutely nobody mentioned it directly. (another win for "getting a bee in your bonnet at exactly the right time and then making your spouse listen to everything you've learned about the bee")