The sky denotes infinity, eternity, immortality, and transcendence; it is the home of the gods; and it depicts omnipotence. The sky is also a representation of the universe's order (Cooper, 1978).
The sky represents spirit, tranquility, and paradise. A clear blue sky denotes joy and tranquility. Dark clouds in the sky, on the other hand, represent tumultuous times in your life. They may also signal that you will soon receive bad news.
A blue sky with some white clouds is always good news. It means that there is sun out even if it's not very hot yet!
A red sunset or sunrise in the sky can mean that something terrible is about to happen. Have fun under the stars tonight!
A greenish tint on the horizon at dawn or dusk means that a storm is approaching. Put up the weather channel!
A yellow color in the sky at any time of day or night usually means that a dust storm is approaching. Stay inside and cover yourself and your belongings with blankets or newspapers until the storm passes.
An orange color in the sky at any time of day or night usually means that a hurricane is approaching. Should we evacuate?
A violet-colored sky at any time of day or night usually means that a tornado is approaching. Seek shelter immediately.
A black sky at any time of day or night usually means that snow, sleet, or rain is approaching.
In a broader sense, the sky marks the beginning of an infinite expanse. It helps us understand that we are only a little part of a vast cosmos. The stars we see at night paint a picture of how the things that make up our visible cosmos were positioned a long time ago. The Earth was once thought to be the center of the universe, but now we know it is not even one of many planets that circle around another star called Sun.
In art, the sky is about hope, freedom, and unlimited possibilities. Artists have used different techniques to express these ideas through the sky. Some artists have painted pictures with lots of details of clouds or scenes from nature as reminders that heaven is above us and earth is below us. Others have chosen more abstract ways of expressing these ideas by using colors that match the atmosphere or by making shapes that look like clouds or other aspects of the sky.
The most famous image of the sky is probably "The Scream" by Edvard Munch. This painting is very emotional because of what happened in Munch's life around this time: His wife left him, he lost his job, and then he went crazy and killed himself. But even though he was insane when he made this picture, Munch still managed to create a work of art that speaks to people all over the world.
Another important artist who had great success using the sky as his subject matter is Claude Monet.
The sky includes everything above the Earth's surface, including the atmosphere and outer space. The sky is also known as the celestial sphere in the area of astronomy. This is an abstract sphere concentric to the Earth, on which the Sun, Moon, planets, and stars appear to move. Visible from anywhere on Earth, it forms a common reference for astronomers around the world.
The word "sky" is used in many ways in science and technology. In physics, a sky is any clear, unobstructed view of the heavens beyond clouds or other atmospheric disturbances. Skies are usually described according to their clarity: clear, partly cloudy, overcast, or night-time. Partly cloudy skies are those that conceal some objects but not others; for example, if it is sunny out but not 100%, then there is a partial cloud cover. Overcast skies are completely obscured by clouds most of the time; only the parts that are exposed by lifting clouds show any light pollution from cities. Night-time skies are dark except where lights from towns and cities shine through. Cloudy skies are very common during rain or snow events when no part of the sky is visible because all is covered by clouds.
In astronomy, the term "sky" refers to the complete expanse of air above a given point on Earth. Because all air has a small amount of gas dissolved in it (oxygen), skies are not colorless; they appear blue.
The term "sky" when used to refer to a particular aspect of the night-time environment is usually called "night sky."
The word "science" comes from the Latin scientia, meaning "knowledge." Science is the process of acquiring knowledge about the universe through systematic observation and experiment. The science of optics began with Aristotle's discussion of vision in his book Optics. Modern scientists still study optics - how light beams are refracted by lenses, how images are formed on film or electronic sensors, etc.- but they do so using instruments such as optical microscopes, telescopes, and spectrometers. Science also deals with the composition of matter, the interaction of matter at the subatomic level, and the origin and evolution of the Universe.
The word "scientist" comes from the Latin scientiatum, which means someone who knows something. A scientist is anyone who makes systematic observations and experiments about anything in order to learn more about it. Scientists use their findings to conclude what is known about their subjects of interest and to propose new theories to explain these discoveries. Science is a method of inquiry that uses data collection and analysis to make conclusions about unknown phenomena.