Hi guys. Welcome to my another blog.Hope you are good and safe.This blog is about reason behind the black space.
Anyone who can raise their head high enough to stare up at the night sky can tell you that space appears black. Images taken by space observatories and even astronauts on the International Space Station only add to the evidence.But have you ever wondered why space appears to be black?
Looking toward the sun we thus see a brilliant white light while looking away we would see only the darkness of empty space. Since there is virtually nothing in space to scatter or re-radiate the light to our eye, we see no part of the light and the sky appears to be black.
The blue color of the sky is a result of this scattering process. At night, when that part of Earth is facing away from the Sun, space looks black because there is no nearby bright source of light, like the Sun, to be scattered. If you were on the Moon, which has no atmosphere, the sky would be black both night and day. You can see this in photographs.
This phenomenon can be used in elementary to explain darkness and illumination. Even though light travels between the Sun and the Earth space appears black because there is nothing (e.g. gas, dust, etc.) for the light to reflect off of. This can also be used as a much deeper phenomenon. Since space is filled with billions and billions of stars and each of them give off light why isn't space completely light? The answer lies in the expansion of the Universe.
Space is black for two primary reason the finite number of stars in the universe and because our ability to see is limited to the visible spectrum of light.
The seemingly endless black of space can feel isolating, but remember that what you can see with the naked eye is only an infinitesimal fraction of the stars and galaxies that lie in the far reaches of outer space. Even so, the vast majority of space is a vacuum, bereft of any object that would generate visible light for us to witness. Finally, if the dark empty void brings you down, remember that it is, in fact, filled with light… just the kind we can’t see!
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