How can we measure visible light? The electromagnetic spectrum includes all forms of light energy, known as electromagnetic radiation. (1) Different types of electromagnetic radiation such as radio ...

On a clear, sunny day, we are met with blue skies. But on days of severe weather, it’s no surprise to be met with dark skies. Sometimes, it even appears green or yellow outside. Here’s a simplified ...

Scientists just observed Mars' nightglow in the visible light spectrum for the very first time. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

A simulated view of what Mars' night sky might look like at its poles. Credit: NASA/JPL-Caltech/Cornell Univ./Arizona State Univ.– E. W. Knutsen The night sky at Mars' poles looks nothing like our own ...