Freedom is a complex issue to understand. We talk about religious freedom,political freedom and freedom to do what we want.

The multi-colored clouds are known as polar stratospheric clouds (PSCs) and look similar to auroras blazing in the sky. However, these rainbow clouds aren’t auroras as you might think.

These artificial clouds are produced by releasing chemical compounds from high-altitude probes, typically at elevations between 80 and 400 kilometers above the Earth’s surface.

The phenomenon of twilight clouds was first observed on Mars in 1997 during NASA’s Pathfinder mission. However, it wasn’t ...