It turns out that the black color is the electromagnetic spectrum indicating that each spectrum is absorbed more completely by an object.
JAKARTA – If you watch various shows or videos about life in outer space, black is the most dominant color that you will see. It was as if the entire universe was covered in black from an infinite void.
The black color seen from the sky conditions in outer space, easily makes us assume that black is the most dominant color. There is nothing wrong with that assumption. However, LAPAN Center for Science and Space Researcher Andi Pangerang explained that basically black is not a color.
Black in the electromagnetic spectrum indicates that each spectrum is more completely absorbed by an object. Furthermore, these spectra cannot escape to be reflected back by the object.
Simply put, black is the absence of light that can be detected by the senses of sight or other optical devices. What’s more, the extraordinarily distant interstellar distance is not enough to make a star look as bright as the Sun, as the center of the solar system.
“What we perceive as color, is basically the electromagnetic spectrum that is reflected back to our eyes. Which in our eyeball there are three cone cells and one rod cell. All four are located in the retina behind our eyeballs,” said Andi, Thursday (2/9).
Each of these cone cells is sensitive to three colors: red, green and blue. While rod cells are sensitive to low light intensity. Similar principles are applied by optical devices that use a charge-coupled device (CCD), a kind of sensor that functions to capture images.
What Andi said through the official page of the National Institute of Aeronautics and Space (LAPAN), could not be separated from what was previously stated by Ivan Baldry, a professor at the John Moores University Astrophysics Research Institute Liverpool, England.
Ivan told Live Science that it is not color but simply the absence of detectable light. Because color is the result of visible light, which is created throughout the universe by stars and galaxies.
In 2002, together with Karl Glazebrook, a distinguished professor in the Center for Astrophysics and Supercomputing of the Swinburne University of Technology in Australia, Ivan co-led research published in The Astrophysical Journal. The aim of the research is to measure light coming from tens of thousands of galaxies and combine them into a single spectrum that represents the entire universe.
In their research, they conducted a survey of the Australian 2dF Galactic Redshift. This research is the largest galactic survey ever conducted at the time.
Ivan and Karl succeeded in capturing the visible spectra of more than 200 thousand galaxies from the entire observable universe. After combining the spectra of all these galaxies, they were able to create a spectrum of visible light that accurately represents the entire universe, known as the cosmic spectrum.
“The comic spectrum represents the sum of all the energy in the universe emitted at different wavelengths of optical light,” Ivan and Karl wrote in their research paper.
The cosmic spectrum, in turn, allowed them to determine the average color of the universe. They used a color-matching computer program to convert the cosmic spectrum into a single color visible to humans. Ivan finally determined that the average color of the universe is beige, which is not too far off from white.
The beige color was finally named “cosmic milk“, taking the Italian word, meaning milk. After a poll was conducted by the entire research team with other suggestions including cosmic cappuccino, big bang beige, and ancient clam cream soup.
“Cosmic milk is the color you will see if you can see the universe from top to bottom. See all the light coming from every galaxy, star, and gas cloud at once, “Ivan said.
So, the color that really dominates this universe is beige. Quite far from the shadows but that’s how it is.
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