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For the first time, scientists were able to measure the exact distance to the nearest from us galaxies. This dwarf galaxy is known as Big Magellanic Cloud. It is located at a distance from us 163 thousand light-years or 49.97 kiloparsecs, to be accurate. Galaxy Large Magellanic Cloud slowly floats in outer space, bypassing our Milky Way galaxy around like the moon rotates around the earth. Huge gas clouds around the galaxy slowly disperse, resulting in what new stars are formed that illuminate with their light interstellar space creating bright colorful space landscapes. The space telescope was able to capture these landscapes Hubble. Small Galaxy Large Magellanic Cloud includes Tarantula Nebula – the brightest star cradle in space across the neighborhood with us – it shows signs of the formation of new stars. Photos from open sources Scientists were able to make calculations, watching the rare close pairs of stars known as eclipsing binary stars. These pairs of stars are gravitationally connected to each other. with a friend, and when one of the stars overshadows the other, as you can see observer from Earth, the overall brightness of the system decreases. If you compare the brightness of stars is possible with incredible accuracy in this way calculate the exact distance to them. Photos from open sources Determining the exact distance to space objects is very important for understanding size and age our universe. While the question remains open: what is the size our Universe, for sure, none of the scientists can say yet. After how astronomers managed to achieve such accuracy in determining distances in space, they can do even more distant objects and, ultimately, will be able to calculate the size of the universe. Also, new features will allow you to more accurately determine the speed expansion of our universe, as well as more accurately calculate Hubble constant. This ratio was named after Edwin P. Hubble, an American astronomer who proved in 1929 that our universe is constantly expanding from the very beginning of its existence. Distance between galaxies galaxy The Big Magellanic Cloud is the closest dwarf galaxy, but a large galaxy – our neighbor is considered the spiral galaxy of Andromeda, which is located from us on a distance of approximately 2.52 million light years. Photos from open sources The distance between our galaxy and the Andromeda galaxy is gradually shrinking. They approach friend to a friend at a speed of about 100-140 kilometers per second, although will meet very soon, or rather, in 3-4 billion years. Photo from open sources Perhaps this will look like a night sky for an earth observer in a few billion years Distances between galaxies, thus, may be very different at different stages of time, as they are constantly are in dynamics. Scales of the Universe Visible Universe has an incredible size diameter, which is billions, and maybe tens of billions of light years. Many objects that we can see with telescopes have not been exist or look very different because the light came to them incredibly long. The proposed series of illustrations will help you. imagine, at least in general terms, the scale of our universe. Photo from open source solar system with its own largest objects (planets and dwarf planets) Photos from open sources Sun (in the center) and the closest to it stars Photo from open sources Galaxy Milky Way showing groups of stellar systems closest to the solar system Photos from open sources A group of nearby galaxies, including more than 50 galaxies, the number of which is constantly increasing as new ones open. Photos from open sources Local supercluster of galaxies (Virgo Supercluster). Size – about 200 million light years Photos from open sources Group of superclusters of galaxies Photos from open sources Visible Universe
Milky Way Galaxy Universe