Researchers studied 3D maps of the universe and discovered one of the largest cosmic structures ever discovered. The structure is a huge wall that stretches 1.4 billion light-years and contains hundreds of thousands of galaxies. It is known as the Antarctic Wall and has been hidden in the public eye. Scientists say it has not been discovered because most of it is 500 million light-years away, behind the bright Milky Way.
The antarctic wall is comparable in size to the Sloan wall. The latter is the sixth largest cosmic structure ever discovered. Astronomers have long known that galaxies are not randomly dispersed in the universe, but clustered in so-called cosmic networks. The cosmic web is made up of a series of hydrogen, and galaxies are stringed together like pearls on a necklace, surrounded by large voids. Scientists are working to map intergalactic lines as part of the field of cosmology. Previous work in this field has mapped other huge galactic structures. The largest single structure ever discovered is known as the Hercules-Coronal Wall, spanning 10 billion light-years. To create their new map, the researchers used new sky measurements to peer into an area known as the Milky Way.
It’s an area of the south of the sky, where the bright light of the Milky Way blocks most of what’s behind it. The methods used by the team included common redshifts, but also took into account the motion of galaxies between them. The advantage of the technology is that it allows scientists to detect hidden masses that affect the motion of other galaxies under gravitational forces.