Starting Monday, any Internet user can now view the largest and most detailed 3D map of the universe ever created. Its appearance was preceded by 20 years of research involving hundreds of scientists from thirty scientific institutions from around the world.
They have done a tremendous job of studying and analyzing more than four million galaxies and quasars, which helped astrophysicists better understand the process and history of the expansion of the Universe. The main scientific instruments of the researchers are the Sloan Digital Sky Survey (SDSS) multispectral imaging system and data collected over the past six years from the optical telescope in New Mexico.
On the map, you can see threads of matter and voids that determine the structure of the Universe during its “early childhood” – about 400 thousand years after the Big Bang. And the oldest and reddest galaxies (red galaxies are in a transitional stage from “young” age to “old”) can be seen on the part of the map that displays the Universe 6 billion years ago.
The 3D map shows that at some point the expansion of the Universe began to accelerate and does not stop until now. According to the researchers, the reason for this is dark energy, an invisible substance that fits into Einstein’s theory of relativity, but has not yet been discovered.