A company called Reflect Orbital wants to illuminate the Earth after sunset with orbital sky mirrors, raising alarm bells.

Orbiting mirrors that can redirect sunlight have moved from science fiction concept to active business plan, promising brighter nights, more solar power and even new tools to fight climate change. The ...

However, future reflectors in the planned constellation could have mirrors up to 177 feet (54 m) across, which would likely create larger and more intense bright spots. Reflect Orbital said it can ...