A California-based startup's controversial plan to put 4,000 tennis-court-sized mirrors in orbit around Earth is "catastrophic" and "horrifying," astronomers warn. Reflect Orbital, which was founded ...

Astronomers have discovered more than 5,000 planets outside of the solar system to date. The grand question is whether any of these planets are home to life. To find the answer, astronomers will ...

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 ...

A company wants to brighten the night sky by reflecting sunlight onto Earth using mirrors placed in orbit. Not a one-off stunt, but a full system designed to extend daylight after sunset and ...