California-based startup Reflect Orbital aims to build a swarm of 4,000 giant mirrors in low Earth orbit to “sell sunlight” to customers at night. Experts warn that the mirrors could mess with telescopes, blind stargazers and impact the environment.
Reflect Orbital, which was founded in 2021, has recently taken the first step in a scheme to sell sunlight at night by bouncing solar rays off giant “reflectors” that can redirect the vital resource almost anywhere on our planet. By doing this, the company aims to extend daylight hours in specific locations, thus allowing paying customers to generate solar power, grow crops and replace urban lighting.
But experts say it is a wildly impractical plan that should never get off the ground. What’s more, the resulting light pollution could devastate ground-based astronomy, distract aircraft pilots and even blind stargazers.
It would be easier to have a satellite in orbit that fires a shotgun at them.
You would need some fancy orbital calculations and precise aiming to make sure the shotgun pellets actually intercept the mirrors, and it would take some engineering to make a shotgun that fires the pellets in a narrow enough cone at high enough velocity to be able to get on an intercept course with most satellites, but you could probably fit it on a Starlink-sized payload. The main issue would be bribing a launch provider to send it up there, but once it’s there you could direct it from the ground without it being traceable to you, and you could have it thrust randomly to dodge anti-satellite weaponry until it runs out of shells.
At some point this would create enough space debris that it could trigger Kessler syndrome, with the debris from destroyed satellites hitting other satellites faster than it de-orbits, until all satellites in low earth orbit are reduced to powder that falls down to earth over a couple of years.
Apart from bribing a launch provider to get the satellite up there, you could probably do either of these for under $10 million, most of it R&D. Much cheaper than developing your own surface-to-space missiles.