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

Turning night into day is something big meteors can do, but it might (one day) become as easy as firing up an app and tapping a spot on the map. The startup isn't new; the company's founder and CEO ...

Imagine it: You’ve worked a long shift, turned the lights out and settled into bed, when all of a sudden the sky outside your window lights up as if it’s daylight. This is what could happen if a U.S.