Andromeda Galaxy: ‘Neighbor’ visible from the window of the sky, the closest to the galaxy is to meet in this galaxy


If you look at the dark sky in the dark of night away from the glare of the city, then something else can be seen among the stars – our nearest neighbor Andromeda Galaxy. Located 2.5 million light-years away from our Milky Way Milky Way, this galaxy, also known as M31, is the most distant space object directly visible to the eye without an instrument. How huge it is, it is known from the fact that it contains one trillion or one lakh crore stars and it is spread over a diameter of two lakh light years.

How did the discovery happen?

Our galaxy is 50 thousand light-years smaller than this and the stars in it will also be a little more than a quarter of Andromeda. This galaxy has remained a mystery to humans since 964 AD. Its discovery is mentioned in the book ‘Fixed-Stars’ by the Persian astronomer Abd-al-Rahman al-Sufi, which he described as ‘the cloud of paradise’.

From 1800 onwards it was understood that it was something very special. Notably in 1864, British astronomer Sir William Huggins found that the spectra of the light coming from M31 were very different. Heber Curtis then calculated on the basis of the light coming from the supernova explosions taking place in Andromeda that it is 5 lakh light-years away from us. This meant that it is not in our galaxy, but outside.

many evidences found

The most important evidence related to Andromeda and the expansion of the universe was found by Astronomer Vesto Slipher of the Lowell Observatory in Flagstaff. He found with the help of the Clark Telescope that Andromeda was moving towards us and three other similar ‘objects’ were moving away from Earth. This proved that it is outside our galaxy, as well as the first strongest evidence of the expansion of the universe.

will get both

With Andromeda moving closer to the Milky Way, it was also found that when the two collided, a larger star cluster would be formed which would be called Milkomeda. According to the European Space Agency (ESA), the two galaxies will merge into each other in two billion years and our Earth, the Sun and the entire Solar System will find a new home. In the year 2012, astronomers had expressed the possibility that due to this collision our sun will reach some other corner of the galaxy. It is, to a great extent, impossible that mankind will be there to witness this collision, aside from this.

Wonderful sky: Touch the Andromeda Galaxy with outstretched hands Photograph of the Year

Wonderful sky: Touch the Andromeda Galaxy with outstretched hands Photograph of the Year

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