Noctilucent Clouds are the highest clouds in the Earth´s atmosphere. They are composed of tiny ice crystals, and they can be observed just a little before sunrise or after sunset. They were first observed in 1885, and have remained since, raising some questions about their origin.
What are Brocken Specters? Are they really ghosts? How and why do they appear? All is revealed here!
The Vernal Equinox, in short is the beginning of Springtime. In long, it is the time when the sun gets lined up with our equator.
In those cold rainy days in which you want to get the least wet possible, should you walk and spend more time under the rain, or instead should you run and pass across the raindrops?
A quick description of Earth's atmosphere.