Well what the hell.
Thanks to a discussion I had with my mom yesterday concerning blue moons, I of course had the moon as the main star of my dream last night.
In the dream, it was the point in the future where our helium reserves had run out (real thing that’s happening, by the way). The top scientists had determined that mining the moon for helium was our most feasible option for replenishing the element, so we’d sent up a bunch of scientists/miners to do so. We’d set up these huge plots on the moon in which we mined the helium.
All was well and good, but as we started carting the helium back to earth, we realized that taking the element from the moon’s surface was actually eliminating the moon’s ability to reflect the sun. It had gotten to the point where the mining plots were resulting in huge black non-reflecting squares on the moon’s surface that could be seen from earth.
Representative pic (made with MS Paint so it’s crappy, but this is really what it looked like in the dream. Original from here):
I actually think the dream itself lasted like 2 minutes, but I remember feeling like we’d been waiting for days for the news to report whether the reflective nature of the moon would ever return in full or if we’d have to live with a patchy satellite.