One of our family’s favorite outside pastimes in years gone by was looking for agates which come in all shades of transparent and surprising colors. What we discovered is that on cloudy days when ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Much like Darwin’s natural selection, the world of lighting occasionally introduces new ...

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 ...

A proposed constellation of satellites has astronomers very worried. Unlike satellites that reflect sunlight and produce light pollution as an unfortunate byproduct, the ones by US startup Reflect ...

Reflect Orbital is set to deliver sunlight on demand by attempting to change how earth experiences night by bringing sunlight ...

Ray tracing and path tracing sound similar — and technically, they are. Both methods simulate how light travels in a 3D environment, but the way they work and the results they produce are completely ...

For most of human history, night arrived as a planetary certainty. Darkness spread across landscapes, and the sky revealed thousands of stars. Today, that sky is disappearing. Artificial light spills ...