Scientists Just Found a Gap In the Universe That Defies All Logic

If you thought space already had its fair share of terrifying places, think again. We have found extremely hot planets, hostile gas giants and black holes, but these celestial objects have properties that make them unique. Imagine a location that is essentially nothing but a void or a gap in space that spans millions of light years. Researchers have discovered such a gap that defies logic, but do we know anything about it or will these questions remain unanswered? Let's find out in this video. The University of Michigan's Robert Kirshner and other astronomers performed the redshift calculations in 1981. Since our universe is expanding, the farther a galaxy is, the quicker it moves, hence redshift is used to estimate distance. If you weren't aware, redshifts are simply the wavelengths of light stretch such that the light is viewed as shifted towards the red section of the spectrum. Kirshner and his team used this approach to produce their three-dimensional universe map. As the map filled in, a surprising occurrence showed up. There was a blank void 700 million light years away from Earth. The Milky Way could fit into this roughly spherical 330 million light year vast region billions of times, but there were hardly any galaxies. This area which contains very few galaxies was once named the Great Nothing but later named the Boots Void because it appeared to be in the constellation of Boots, the herdsman who drives the plow around the North Pole. With a radius of 62 megaparsecs, it is a massive hole containing a center roughly at declination 46 degrees and right ascension 14 hours 15 minutes. Since then, surveys have produced increasingly detailed maps of our universe. We now understand how galaxies are structured resembling a vast web. Most galaxies in our universe are found in long spiraling structures called filaments. These combine to form clusters which are areas with a lot of galaxies gathered together. However, there are vast empty spaces with scarcely any galaxies between these threads. Most of the voids are between 30 and 300 million light years vast and make up about 80% of the visible universe. The Boots Void, also known as Supervoid, is one of the largest known voids in the universe, measuring almost 330 million light years in diameter, around 0.27% of the diameter of the observable universe, or nearly 236,000 mpc3 in volume. The Boots Void's center is roughly 700 million light years away from the Earth. Soon after Robert Kirschner found this strange emptiness, other astronomers found that it holds a few galaxies. The discovery of eight galaxies in Robert P. Kirschner, G. McAlpine, and S. Gregory was published in 1987. M. Strauss and John Huttra announced the discovery of three more galaxies in 1988, followed by Greg Aldering, G. Bothan, Robert P. Kirschner, and Rod Musk in 1989. By 1999, we knew the Boots Void had 60 galaxies in a space that would typically have around 2,000. But what's the reason behind the occurrence of this enormous gap? It has been theorized that the Boots Void was formed by merging smaller voids, much like our soap bubbles coalesced to form larger bubbles. This would account for the small number of galaxies that populate a roughly tube-shaped region running through the middle of the void. Besides these, voids were also supposed to have formed at the universe's beginning. All of the universe's matter was densely packed together in the early universe. It is believed that at first this soup was uniform, but soon after tiny changes in distribution of matter were produced by random quantum fluctuations. Some areas had become slightly more dense, which meant their gravitational pull was more substantial, drawing matter away from less dense areas. This increased their density, increasing their gravitational pull, attracting more matter, and so on. At the same time, the universe was expanding rapidly and these quantum-level fluctuations eventually spanned hundreds of millions of light-years. Meanwhile, small clumps of matter began to coalesce into galaxies. Astronomers can learn about the early universe by studying these massive structures. Today, advances in telescope and imaging technology allow them to create more detailed versions of Kirchner's maps, such as the Dark Energy Survey, which has mapped out a quarter of the southern sky and examined around 300 million galaxies. By comparing these maps with simulations, astronomers can understand how our universe came to look the way it does today. We are fortunate to have supercomputers that can create detailed simulations of how the universe has grown to the current cosmos we see today. The Boots Void, as we mentioned before, is around 250 to 330 million light-years across and is one of the largest voids we've discovered. Only 60 galaxies have been detected in the Boots Void and they are all arranged in a tube-like pattern that runs through the void. For example, the distance between us and our nearest galaxy, Andromeda, which is approximately 2.5 million light-years away, will only cover roughly 1% of the Boots Void. There should be about 2,000 galaxies in the Boots Void if we use a rough estimate of one galaxy every 10 million light-years, which is four times farther than Andromeda. Astronomer Greg Altering expressed the vastness by saying that if the Milky Way had been in the centre of Boots Void, we would not have known there were other galaxies. Scientists cannot explain how this colossal void between Perseus and Taurus constellations formed. There are several empty bubbles in the universe, such as the Great Nothing or the Boots Void. While they may not be able to confirm, there will always be several explanations for all space mysteries, and these gaps certainly have their fair share. One of the craziest is the hypothesis that an advanced extraterrestrial society may have built Dyson Spheres capable of power harvesting around a large number of stars blotting off their light. As you may have guessed, this is the least popular theory, but it is scientifically possible. There are frequently more questions than there are answers. Shmuel Bialy, the study's principal author and post-doctoral researcher at the Institute for Theory and Computation at the Centre of Astrophysics, has a few more radical thoughts. We have two hypotheses. Scientists now refer to the Perseus-Taurus supershell as either generated by a single supernova that exploded at the centre of this bubble and pushed the gas outward, or by numerous supernovae that occurred for millions of years. If this information is accurate, he claims that the presence of this space shows that a star supernova creates a series of events that could eventually result in the birth of new stars. The enormous bubble was discovered after researchers examined 3D maps of molecular clouds and space produced using information from the Gaia Space Telescope operated by the European Space Agency. Catherine Zucker, a post-doctoral researcher, explained that the 3D maps gave astronomers an entirely new perspective on the universe's structure, saying that, we've been able to see these clouds for decades, but we never knew their true shape, depth or thickness, and we were also unsure how far away the clouds were, but now we know where they lie with only 1% uncertainty, allowing us to discern this void between them. Several theories show how these molecular gas clouds eventually gave birth to new star systems. While astronomers have previously tested these theoretical ideas using simulations, this is the first time we can use actual non-simulated 3D views to compare theory to observation and evaluate which theories work best. With these non-simulated 3D views, hopefully we will get some definitive answers. The studies on the Boots Void are still ongoing and need time to be unveiled. We hope that scientists will be able to reveal more fascinating facts about this cosmic phenomenon. If we stay on the right track, we might be surprised by many more voids until then. However, till then, Boots Void is still thought to be the most spooky place in the universe. Would you like to go there? Are you afraid? Or are you adventurous and would like to explore to your heart's content? Maybe you are a dreamer, so keep on dreaming up all sorts of weird stuff about Boots, possible and impossible.