Navigating watercraft is difficult at night, and using red, green, and white lights can help ships to avoid accidental collisions in the dark.

Let's explore what the red and green LED lights mean on your Raspberry Pi and how you can use them for troubleshooting. If you own a Raspberry Pi 2 or later, there are only two LED lights to be ...

In addition, planes employ several kinds of small, colored lights on their bodies, particularly red and green lights on the tips of the wings. These look neat flying through the night, but they're ...

The NASA astronaut trained his camera on the northern lights recently, posting on X (formerly Twitter) a short video of the ghostly phenomenon flickering over ... featuring red and green aurorae.