NASA's Curiosity rover has captured images of rainbow-colored noctilucent clouds in Mars' atmosphere. Made of dry ice, these ...

Ever wonder why the sky is blue, vs. say red, orange or purple? An effect called Rayleigh Scattering is part of the reason we see only blue, despite it all starting with a rainbow of colors.

Today’s article will grab your heartstrings and pull down hard. What’s it about? It’s about a man who is facing his own death. It’s also about the losses he has ...