F.C.C. Approves Space Mirror Test to Light Night Sky Despite Outcry
FCC Approves Test of Space Mirror to Light Night Sky Despite Outcry
The F.C.C. has authorized a start-up to test a satellite equipped with a 60-foot mirror designed to reflect sunlight onto Earth after dark. This controversial project aims to power solar farms and assist rescue workers by illuminating a three-mile-wide patch of the night sky, sparking significant debate over the implications of altering our natural darkness.
A start-up company has permission to try its plan to bounce solar rays onto the dark side of Earth, turning night to day for a three-mile-wide patch.
- ben_w
They seem to be talking about each satellite managing the luminosity of the full moon over a few square kilometres, and getting a few tens of thousands of them.
Even if you ignoring how much drag these must have, and hence how much electrical power you'd need for an ion drive just to keep them up, each spot being a few km across (and only getting light while the satellite is over your horizon) is just not compelling.
Given most people don't have any reason to illuminate several square kilometres at once, for realistic scenarios it will take a lot of satellites before you beat the cheap battery-powered floodlights in my local Aldi or Kaufland, and the batteries in those lasts a lot longer than the 10-15 or so minutes each of the satellites will be over the horizon, and reflectors like these can only supply sunlight close to sunset otherwise the earth blocks the sun from them.
In the list of things which, if you could make them at all useful, would also be relatively easy to redesign as weapons.
- andwur
How are the economics of this idea meant to be viable? The proposed business model is to park hundreds of millions to billion dollars of satellites in orbit, plus the costs to maintain and operate them, to meet the goal of selective area illumination and solar power. Ignoring the issue of cloud cover, which still seems to be an impediment. That's going to need to directly compete with terrestrial energy storage technology, e.g. batteries, and... general lighting. Both of which are well established, diversified and reliable market segments with vastly cheaper MWh costs compared to beaming a small amount of light down using a satellite.
This strikes me as another hand-waved scifi/fantasy inspired investment, where everyone is so caught up in proving they can achieve this (spoiler: this is obviously possible) that no one has stopped to ask does that achievement lead to a real benefit outside of VC wealth transference?
- gcr
Wonder what would happen if a hacker focused all ten thousand of them on a single area for an hour or two. Sounds like a really energy-efficient way to demolish a city.
X Wing: Wedge’s Gamble (1996) by Michael Stackpole shows the rebel alliance using similar tricks during the battle of Coruscant.
- kklisura
I do wonder if capital is so cheap or wealth inequality is actually much bigger problem then we thought so that excess capital ends up in ideas like this.
- goda90
So we've got this problem of the atmosphere trapping too much heat from solar radiation hitting the surface and the plan is to increase the amount of solar radiation hitting the surface?
- assbuttbuttass
We've entered the "bond villain" era of VC startups
- ElijahLynn
> There are many problems with this proposal, including impacts these satellites will have on human health and safety, as well as on astronomy and the low-Earth environment.
> Flashes during mirror repointing could disrupt pilots and drivers. The light could also disrupt circadian rhythms of plants, animals and humans
- blaze33
One question I have is about apparent magnitude: given the satellite's small size (relative to the apparent size of the moon) it would have to be very bright to match the luminosity of the full moon on the surface.
In this article: https://skyandtelescope.org/astronomy-news/new-kind-of-satel...
> calculated that the Reflect Orbital spacecraft would appear as points of light with a magnitude of -15 [...] might damage the eye.
-15 seems ~10 times brighter than the moon (-12,6) if I got the formula right so it would indeed be very bright.
Reminds me of all the led lighting we have now: one evening on a random street I watched the cars, bicycles, shops, street lamps: all leds, yes a bit brighter and colder than the old bulbs I know, buuut the light sources being very small dots (with no diffuser), it feels very harsh to the eye, at least to me.
Anyway, even if it proves useful for something, it would join the long list of innovations doing one thing at the expense of everyone else (externality == light pollution in this case).