Why is the sky blue simple answer?
Why is the sky blue simple answer?
The Short Answer: 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.
Does refraction cause the sky to be blue?
We see a blue sky, because of the way the atmosphere interacts with sunlight. For instance, if sunlight passes through a transparent material, such as water, those light waves will refract, or bend, because light changes speed as it travels from one medium (air) to another (water).
Why is the sky blue chemistry?
When light enters the atmosphere it hits these small molecules such as oxygen (21%) and nitrogen (78%) (gases). Gases then tend to absorb not all of the light but only part of it. The blue light is scattered everywhere you look in the atmosphere. This is why the sky is blue.
What Colour is the moon?
Why moonlight is white?
It’s a true physical effect, caused by the fact that – when the moon is low in the sky – you’re seeing it through a greater thickness of Earth’s atmosphere than when it’s overhead. The atmosphere filters out the bluer wavelengths of white moonlight (which is really reflected sunlight).
Is the moon GREY or white?
The moon’s color varies somewhat according to its phase and position in the sky, although this color variation generally is too subtle for human eyes. However, the moon is actually gray rather than pure white, on average much like the well-worn asphalt on most streets.
How cold is the moon?
Taking the Moon’s Temperature Daytime temperatures near the lunar equator reach a boiling 250 degrees Fahrenheit (120° C, 400 K), while nighttime temperatures get to a chilly -208 degrees Fahrenheit (-130° C, 140 K).
Are there Moonquakes?
The moonquakes are probably a result of the moon’s ongoing contraction. The moon is still tectonically active, like Earth, generating moonquakes as our planet creates earthquakes, a new study based on Apollo mission data found.
What color is the hottest star?
White stars are hotter than red and yellow. Blue stars are the hottest stars of all.
What is the color of the youngest star?
What is the biggest star in the universe?
Answer: The largest known star (in terms of mass and brightness) is called the Pistol Star. It is believed to be 100 times as massive as our Sun, and times as bright! In 1990, a star named the Pistol Star was known to lie at the center of the Pistol Nebula in the Milky Way Galaxy.
What’s the closest star to our sun?
Alpha Centauri A
Which star shines the brightest?
The brightest star in the sky is Sirius, also known as the “Dog Star” or, more officially, Alpha Canis Majoris, for its position in the constellation Canis Major. Sirius is a binary star dominated by a luminous main sequence star, Sirius A, with an apparent magnitude of -1.46.
How far is our closest star?
Proxima Centauri, the closest star to our own, is still 000,000 km away. (Or about 268,770 AU.)
What is the closest sun to our sun?
The star Proxima Centauri, one of 3 stars in the Alpha Centauri system, is our sun’s nearest known neighbor at 4.2 light-years away. Hubble Space Telescope image of Proxima Centauri, the closest known star to the sun. Read more about this image.
Why do stars twinkle?
The movement of air (sometimes called turbulence) in the atmosphere of Earth causes the starlight to get slightly bent as it travels from the distant star through the atmosphere down to us on the ground. To our eyes, this makes the star seem to twinkle.
Can we see Alpha Centauri?
Bottom line: The Alpha Centauri system is the closest star system to our sun. On our sky’s dome, we see this multiple system as a single star – the third-brightest star visible from Earth.