Recently, the University of Hawaii opened a map of the universe in which 56,000 galaxies could be seen. It was the largest map of the cosmos to date and, in addition, it located in two dimensions where these galaxies were. It also gave a possible date for the creation of the universe: about 13.8 billion years.
Now, scientists from another university, Johns Hopkins, have created the most complete map of the universe. And it is also interactive. It is ‘The map of the observable universe’, and it shows a portion of the universe that puts the Milky Way as the center and, from there, it shows what the most distant galaxies are like, up to the edge of the universe.
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Complete map of the universe | Johns Hopkins University
From our galaxy to the end, the map shows about 200,000 galaxies. The image above shows the map and which celestial bodies are specific to each area. The universe expands over time, and this expansion stretches the wavelength of light. Therefore, the further away any of the thousands of detected objects is, the more red it appears.
At the bottom at the beginning, with blue colors, appear the spiral galaxies, like the Milky Way. Then, with yellow colors, elliptical galaxies appear, which shine brighter. The next stripe on the map is red, representing another group of redshifted elliptical galaxies; that is to say, that from the telescopes they are seen of that color and their filaments are less perceptible.
The next layer is blue and is the largest, showing quasars, which are supermassive black holes at the center of some galaxies. It would be followed by the layer of redshifted quasars, the expansion of the universe narrows its light because it changes color.
Finally, at the upper edge is the limit of the universe observed by astronomers, in yellow, orange, white and blue colors. This exemplifies the first flash of radiation emitted shortly after the Big Bang, about 13.7 billion years ago. Currently, the Cosmic Microwave Background flash is observed as radio waves, and beyond it, humans have not been able to observe anything else because their travel time is longer than the total age of the universe.