Human civilization could collapse to the point where we lose space exploration, then we're stuck with some space bubbles limiting how much sunlight the planet gets. As effects of climate change wear off, we are slowly plunged into an eternal, global ice age. All life on earth is exterminated, save for some most resilient microorganisms.
The proposed location for this space bubble system, Earth-Sun Lagrange Point 1, is gravitationally unstable.
Any device located there must actively maintain its location , using calculated thruster firings, generally on the order of months, or it will drift out of position in less than a year.
So we're safe from that scenario. If the satellite loses power, it will just drift out of our line of site of the sun. No intervention required.
Other active spacecraft located at L1: NOAA's DSCOVR climate observatory, and NASA's Advanced Composition Explorer
