The sky is an unobstructed view upward from the surface of the Earth. It includes the atmosphere and outer space. It may also be considered a place between the ground and outer space, thus distinct from outer space. In the field of astronomy, the sky is also called the celestial sphere.

4 小时之前 · A spiral of light illuminating the night sky captivated observers in Britain and much of Europe on Monday. Its cause: a SpaceX rocket, experts said, after the glowing spectacle ignited widespread ...

The sky is the appearance of the atmosphere around the surface of the planet from our point of view. We see many objects that are actually in space such as the Sun, the Moon, and stars because they are in the sky.

The meaning of SKY is the upper atmosphere or expanse of space that constitutes an apparent great vault or arch over the earth. How to use sky in a sentence.

Sunlight travels as waves of energy, and different colors of light have different wavelengths. Red light has long wavelengths, while blue light has short wavelengths. Light bounces off of air molecules in the Earth's atmosphere, scattering in all directions.

2025年2月28日 · Why Is the Sky Blue? The Short Answer: Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered more than the other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

2021年4月8日 · The sky can be so many different things: it can be big, beautiful and blue, or grey, cloudy and rainy. It can also be full of stars, or full of orange and red clouds at sunset or sunrise ...

2017年1月11日 · It turns out our sky is violet, but it appears blue because of the way our eyes work. Color sensitivity of the cones and rods of the human eye. Credit: Wikipedia. We don't see individual...

2025年1月25日 · In short, the sky looks blue because the blue portion of sunlight is much more likely to bounce off the molecules in the atmosphere than the other colors of light. Now, picture the nitrogen and oxygen molecules as tennis balls and the light as heaps of marbles.

The color of the sky is one of the most commonly asked scientific questions. The quick answer is that the sky appears blue because of how the atmosphere scatters sunlight. The more in-depth explanation has to do with the physics of how sunlight interacts with molecules and particles in Earth’s atmosphere. What Makes the Sky Look Blue?