Our galaxy not only attract but also repel at a speed of 2 million km/h

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2017-02-01 10:30:08

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Our galaxy not only attract but also repel at a speed of 2 million km/h Source:

Maybe we do not notice, but our planet revolves around the Sun faster than 100,000 kilometers per hour. Moreover, our entire Solar system is moving within the spiral arms of the milky Way at a speed of 850 thousand kilometers per hour. That makes moving through the Universe at a speed of more than 2 million miles per hour, and the milky Way itself. And scientists seem to have finally figured out what it was.

Across from us (our galaxy, to be precise) at a distance of about 650 million light years is a remarkably dense supercluster of galaxies called the Shapley Supercluster. And we're drawn right to him. Behind us scientists have discovered a previously not-documented region of the cosmos. The main oddity with this region is that space here is a space almost entirely devoid of galaxies and... it pushes us in the direction of the Shapley Supercluster with incredible force.

Cosmologist Yehuda Hoffman from the Hebrew University in Jerusalem and his team have created a new three-dimensional map of the location closest to us neighboring galaxies, and it is the first time scientists have determined the existence of so-called "dead zone", called the Dipole Repulsive (Dipole Repeller).

As you can see from the animated video below, our galaxy is just in the middle: Dipole Repulsive, possessing a low density, pushes our milky Way, while the super-dense Shapley Supercluster draws us to himself.

"by Creating a three-dimensional map of the distribution of galaxies in space, we found that our milky Way is speeding away from the huge and previously unknown region of low density. As this alienates us rather than draws, we decided to call this region by the Repulsive Dipole", — explains Hoffman.

"Besides the fact that our galaxy repels Dipole Repulsive, she still is attracted towards the region of the Shapley Supercluster. These two forces govern our current position in outer space".

In the past, scientists have suspected the presence of a space with a low density behind our galaxy. However, even though the Shapley Supercluster and has incredible mass (approximately 10 000 times the mass of the milky Way), to draw our galaxy to itself with the speed with which moves the milky Way, it is not. Therefore, on this account, the researchers had questions and doubts. The Shapley Supercluster is the largest known concentration of matter in the local Universe. Its radius is about 1 billion light-years.

When you consider how time-consuming is the process of search for possible exoplanets at a distance of at least 4,25 light-years from us, not to mention those that may be in several millions of light years for scientists to establish the facts turned out to be a very difficult task.

"In previous studies conducted more than a decade ago, addressed the issue of the distribution of rich galaxy clusters, emitting x-rays through space. And even then, there were some hints of the existence of this "dead zone". However, statistics at the time were not sufficient to come to any certain conclusion" — says Brent Tully of the University of Hawaii and one of the participants in the new study.

However, Hoffman and his team were able to figure out how more than 8,000 galaxies closest to us, details of which were obtained using several ground-based observatories and space telescopes, including the Hubble space telescope, are interrelated. This information gave us the first real proof of the existence of the Great Dipole Repulsive.

Considering all the effects on our galaxy, the overall picture looks like this:

Interestingly, according to the information gathered in the study of cosmic background radiation (the so-called residual glow from the Big Bang), these two forces (Attractor and Repulsive) acts on we (that is, pull and push) with the same force and are on the same line of sight (front and rear) with the Milky Way.

Now that we found the first evidence of the existence of the Dipole Repulsive behind the milky Way and our neighboring galaxies, the next step for scientists will be to find direct evidence proving it. In addition, speech can go not about a region, and immediately a whole set of superclusters and voids, which together have an impact on our galaxy, pushing her in the direction of the Shapley Supercluster.

Where will it all end in the end — nobody knows. However, some immediate prospects can be viewed now. In about 4 billion years our milky Way will collide with the galaxy Andromeda. Closing speed is 140 kilometers per second. Astronomers from the International centre for radio astronomy even created a movie and decided to show how it will look like an intergalactic cataclysm, resulting in the formation of a new super massive galaxy, which scientists have even managed to name – Lacomeda.

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