The "Great Attractor" is a gravitational anomaly located in the direction of the constellation Centaurus. It was first discovered in the 1970s and is believed to be a region of space that exerts a strong gravitational pull on nearby galaxies, including our own Milky Way.
However, the exact nature of the Great Attractor is still not fully understood, and there are different theories regarding its composition. While some early hypotheses suggested it might be a supermassive black hole, current observations and calculations indicate that it is unlikely to be a single black hole of unimaginable proportions.
Instead, the most widely accepted explanation is that the Great Attractor is a region of space that contains a dense concentration of galaxies and galaxy clusters. These massive structures collectively contribute to the gravitational forces that attract nearby galaxies towards them. It's important to note that the Great Attractor is not visible in optical wavelengths due to the presence of dust in our galaxy, which obscures our view.
Further research and observations are still needed to unravel the precise nature of the Great Attractor and the gravitational forces at play in that region of the universe.