US companies apparently considering lighting some of the night side of Earth with large mirrors in space:
British astronomers 'alarmed' by plans to use space mirrors to light Earth at night
British astronomers have said they are "alarmed" by a US company's proposals to launch space mirrors to reflect sunlight to Earth at night.California-based start up Reflect Orbital plans to launch satellites with mirrors attached to them later this year in order to deliver sunlight on demand.
The company says the lights are dimmable, highly localised, and easy to relocate when needed.
It says some of the benefits could include expanding the potential of solar power, extending working areas, replacing streetlights, and illuminating disaster zones.
However, the Royal Astronomical Society (RAS) said the satellites would "permanently scar the natural landscape" and make the night sky three to four times brighter.
Dr Robert Massey, Deputy Executive Director at the RAS, said: "These proposals would not only have a disastrous impact on the science of astronomy, they would also hinder the right of everybody on Earth to enjoy the night sky. That is unacceptable.
"The stars above us are a valued part of human heritage – deploying more than one million exceptionally bright satellites would utterly destroy this and permanently scar the natural landscape."
According to Reflect Orbital's website, the company plans to launch 50,000 satellites by 2035, with the first two expected to be launched by the end of the year.
It also states that they will "maintain strict exclusion zones for astronomy and sensitive environments."
Alongside the European Southern Observatory and the International Astronomical Union, the RAS says they have submitted comments opposing the plans to the US Federal Communications Commission (FCC).
https://www.itv.com/news/2026-03-17/astronomers-alarmed-by-plans-to-use-space-mirrors-to-light-earth-at-night
Originally Posted by: Bolty