Astronomers have recently discovered a massive “extragalactic structure” hidden behind the Milky Way. This appears to be a giant cluster of galaxies, contributing to filling in this mysterious region on our cosmic map, referred to as the “zone of avoidance”. Until now, no one knew what existed in the area obscured by 10 to 20% of the universe.
The research explains that this mysterious region does not allow for clear optical observations of extragalactic sources behind the Milky Way. The reason for this is explained as due to “the extinction of the optical emissions of these objects.”
The scientists in the new study decided to conduct their observations using near-infrared wavelengths (NIR). They believe NIR may provide a source for astronomical discoveries, including the exploration of new galaxies. The success of NIR in this regard could help to complete the picture of the giant structure in this still “underexplored” area of space.
The obscured mysterious galaxy.
The newly identified cluster of galaxies has been named VVVGCl-B J181435-381432, located behind the bulge of the Milky Way, helping to complete the “picture of the large-scale structure in this still underexplored region of the sky.”
The team of experts pinpointed the location of the new star cluster in the mysterious region using the VISTA telescope located in Paranal, Chile. The scientists have used the term Great Attractor to refer to an undetermined anomalous feature that pulls galaxies and galaxy clusters towards it, present in the Zone of Avoidance (ZOA) and hidden galaxy clusters. They also explained that due to the high star density and line of sight caused by dust, detecting galaxies behind the galactic plane is a challenge.
The mysterious region had previously been suspected of harboring a galaxy, but now clearer insights have emerged. Researchers state that they are also preparing to welcome surprises regarding future discoveries in this area filled with many unknowns.
