CBC (22 October 2025)

Giant mirrors in space to reflect sunlight at night? No thank you, astronomers say

John Barentine, founder of Dark Sky Consulting, said there's a lot that's unknown about Reflect Orbital's technical details. However, he added, information the company has disclosed suggests it will have unintended consequences.

"These objects will appear like very bright stars in the sky moving slowly as seen from potentially hundreds of miles or kilometres away from the spot on the ground where the light appears," he said.

​"It's happening at a time when the world is dark. The expectation of [animal] biology is that the conditions will be dark around them. I worry a bit that if you are, say, a migratory bird — who we now know are navigating by the stars at some level — that this could be very disorienting."

Read more: https://www.cbc.ca/news/science/reflect-orbital-space-mirror-9.6947427