If you're trapped inside a house and have never seen all the façade, how can we know what it looks like on the outside reality? Something happens to our own Milky Way Way, of which we have not been able to contemplate its complete structure. We believe that this is a circular galaxy, with curving arms wrapped in powder form a spiral. What if it were not so? A Brazilian team of astronomers suggests that our galaxy is actually square. Not exactly like a box or bucket, but in certain areas are light arms elbow, a right angle instead of a curve. Interestingly, our solar system is situated in one of the most straight from one of the "extreme" external.
The map of the Milky Way has been redrawn several times since in 1950 he used radio telescopes to trace its spiral arms. Now, Jacques Lepine and his team at the University of Sao Paulo have made a new map of the Milky Way with a precision never before seen. To do this, take into account the spectrum produced by clouds of carbon monosulfide, a fairly common component in our Galaxy, instead of following the trail of ionized hydrogen, which is normally used to hear the galaxy structures. A third arm
scientists collected information from 870 regions of the Milky Way and found evidence of the straight, which gives the whole look different than we thought. The idea of \u200b\u200ba galaxy is not so strange square. For example, we the Messier 101, the Pinwheel, has straight sections. However, something is a surprise in the Milky Way.
To make matters worse, the astronomers also found a third additional arm. In 2008, a study from the Spitzer Space Telescope observations indicated that the number of arms of the Milky Way from two to four, although other studies indicate that there are three. The new arm is 30,000 light-years from the center of the galaxy to a length of between 80 and 140 degrees.
The study appears online in the scientific archive arXiv.org.
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