The “red sky” trick gets around this by using the sun. Red wavelengths pass through air more easily than blue ones. When the sun is setting in the west, its light passes through hundreds of miles of atmosphere — becoming extremely red in the process — before hitting the clouds above you.
A red sky appears when dust and small particles are trapped in the atmosphere by high pressure. This scatters blue light leaving only red light to give the sky its notable appearance. A red sky at sunset means high pressure is moving in from the west, so therefore the next day will usually be dry and pleasant.
For any home species the sky would have a neutral colour (but more blue from Rayleigh Scattering, and more red at sunset due to Mie Scattering).
A red sky appears is a result of a phenomenon called scattering – when dust and small particles are trapped in the atmosphere by high pressure. Molecules and small particles in the atmosphere change the direction of light rays, causing them to scatter.
The sky is blue due to a phenomenon called Raleigh scattering. This scattering refers to the scattering of electromagnetic radiation (of which light is a form) by particles of a much smaller wavelength.
As far as wavelengths go, Earth's sky really is a bluish violet. But because of our eyes we see it as pale blue.
Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
Residents in Indiana, California, Washington, Oregon and even Hawaii have noticed the sun appearing orange-red, and experts say the color is due to smoke particles high in the sky that have blown over from the wildfires in the western United States.
“Those are the kind of storms that may produce hail and tornadoes.” Green does indicate that the cloud is extremely tall, and since thunderclouds are the tallest clouds, green is a warning sign that large hail or a tornado may be present.
They say that the purple sky is an optical illusion caused by the way our eyes process colors. This happens when there is a lot of light pollution in the air from things like streetlights and car headlights; these lights can cause our eyes to “adjust” to see more blue and violet colors, making the sky look purple.
The spectrum of light was spread so the violet wavelengths filtered through all of the moisture and turned our skies to purple. The scientific term for the light spectrum being spread out is called Rayliegh scattering.
Without an atmosphere the sky appears black, as evidenced by the lunar sky in pictures taken from the moon. But even a black sky has some lightness. At night, the sky always has a faint color, called "skyglow" by astronomers.
Well when the sun sets, it is lower down and the light has further to travel. Light is made up of all different colours - that's why we get rainbows. Blue light can't travel very far so much of it 'scatters' out before it reaches us. But red light can, which is why the sky appears more red and pink than usual.
If this blue scattered light is set against an environment heavy in red light—during sunset for instance—and a dark gray thunderstorm cloud, the net effect can make the sky appear faintly green. In fact, green thunderstorms are most commonly reported in the late afternoon and evening, according to Beasley.
Pointing out the glorious sunset to a friend on Thursday, I quoted to him one of my grandmother's favorite sayings, “Red sky at night, sailors delight. Red sky in the morning, sailors take warning.”
It's true the sky can turn green before a tornado. As a Nebraska native, I've witnessed the phenomenon firsthand numerous times. While thunderstorm clouds may appear green or yellow before a tornado, they may also turn these colors before a hail storm.
In heavily polluted air, the sky may appear yellow or brown, and this is due to the particles being able to scatter the light to produce these colors. This phenomenon is called Mie scattering. To sum it up, the way light is scattered determines the color of the sky."
The National Weather Service says orange skies are common following storms that move in just as the sun is setting. “The orange hue is caused by the same process that causes the vivid colors at sunsets.
Green lightning is a rare phenomenon that can be seen during a thunderstorm. Someone who has seen green lightning is extremely lucky as green lightning strikes are rarely seen. It is so rare that the only photograph of a green lightning strike is one from when the Chaiten volcano in Chile erupted.
The color of the sun is white. The sun emits all colors of the rainbow more or less evenly and in physics, we call this combination "white".
Besides atmospheric gases, water droplets, and dust particles, air pollutants also determine the sky's color at sunrise and sunrise. Aerosols suspended in the air scatter sunlight into a band of colors. When there are more aerosols or smog, more sunlight is scattered, resulting in purple or pink sunsets.
The sun has appeared with a red hue across much of the northern United States this week due to smoke from wildfires on the West Coast and in Canada, News 4 Meteorologist Mike Cejka said.
At points in the sky in between the red and blue colors, some green light will be present, but the points will appear either yellow or turquoise, depending on whether there is more red or more blue light mixing with it.
The average color of the sky is from Ultramarine Blue to Cyan Thalo Blue. This color mixture is equal to the pigment Cobalt Blue. Pure Cyan "Phthalocyanine" Blue CYAN tints appear in the lower third of the sky. Magenta and yellow are diminished by atmospheric colloidal vapor.
Bloomberg via Getty. The green-blue glow that filled the New York City sky on Thursday night—making some wonder if aliens had landed and others fear they were witnessing the end of the world—was generated by burning aluminum, when one small bit of decidedly earthly Queens became momentarily hotter than the sun.