Why is it black in outer space?

That is a question we can answer. The daytime sky is blue because light from the nearby Sun hits molecules in the Earth's atmosphere and scatters off in all directions. The blue color of the sky is a result of this scattering process. read more

Yet we know from experience that space is black! This paradox is known as Olbers' Paradox. It is a paradox because of the apparent contradiction between our expectation that the night sky be bright and our experience that it is black. read more

The color black usually signals the absence of light. But inside the solar system, space is filled with light. “Light usually travels straight ahead in a line unless it reflects off of something or is bent by a lens,” explains Geza Gyuk, Director of Astronomy at the Adler Planetarium and a research scientist at the University of Chicago. read more

The outer space is black in color because their is approx. vacuum. This results in no scattering of light ! Light is scattered away by particles present in air and thus we see light every where, but in outer space scattering of light doesn’t happen and we see black color. The color black usually signals the absence of light. read more

Answer: Your question, which seems simple, is actually very difficult to answer! It is a question that many scientists pondered for many centuries - including Johannes Kepler, Edmond Halley , and German physician-astronomer Wilhelm Olbers. There are two things to think about here. read more

Space is full of light, but it doesn't look like it. Credit: NASA, ESA, and S. Beckwith (STScI) and the HUDF Team The color black usually signals the absence of light. read more

The outer space is black in color because their is approx. vacuum. This results in no scattering of light ! Light is scattered away by particles present in air and thus we see light every where, but in outer space scattering of light doesn’t happen and we see black color. read more