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September 08, 2019

A telescope is an optical instrument that makes distant objects appear magnified by using an arrangement of lenses or curved mirrors and lenses, or various devices used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. The telescope is a very important invention. The first working telescope was invented by a Dutch eyeglass maker named Hans Lippershey. Since then the telescope has evolved over the past years and in today’s time telescope is used for many purposes.
The most powerful telescope that is currently being used by the scientists and astronauts is the Hubble Space Telescope. The Hubble space telescope Was launched in the year 1990. Some of Hubble’s major contributions include determining the age of the universe with more precision, finding more moons near Pluto, doing observations of galaxies in the young universe, monitoring space weather on the outer planets, and even observing exoplanets.


Most people must be wondering what is the furthest object that can be observed with a telescope. Recently scientists used the Hubble space telescope to observe the furthest thing that mankind has ever seen. The furthest object seen is a galaxy which is 13.4 billion light years away from our galaxy. The new galaxy opens a gateway for the scientists to better understand of the way that the universe evolved over time. According to scientists a galaxy of this size shouldn’t have been able to exist when the universe was so young.   
The distance from the galaxy was measured by splitting up the light into the colors that it’s made up of. Since the universe is expanding, distant objects usually stretch towards the red part of the color spectrum. The new galaxy has been named as GN-z11 and it has a red shift 11.1. This is the furthest object that was observed through a telescope by mankind.  

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