The FCC authorized Reflect Orbital to launch the mirror satellite Eärendil-1. “For optical astronomy, this poses an ...

A proposal to create "sunlight on demand" from space has moved forward in a "deeply concerning" federal approval.

Owing to the wave nature of light there are many ways that such different waves can interact with each other, but also with materials. Everyone knows about reflecting light with a mirror, which is a ...

A start-up company has permission to try its plan to bounce solar rays onto the dark side of Earth, turning night to day for ...