![]() Now, what is a light year? It is the distance light travels in one year, which is about 9,460,000,000,000 kilometers. So a parsec is defined as the longest length of a triangle whose shortest side is 1 AU and which subtends an angle of one arc second at the opposite vertex.Ī simple calculation will get you, 1 parsec = 3.26 light years 1 AU is essentially the average distance between the sun and the earth (approximately 150 million km). To understand how a parsec is defined, you should first know what an astronomical unit (AU) is. To get a grasp of how huge that actually is, let us get to the basics of astronomical units. Our universe is expected to be 13.772 billion years old, quite old isn’t it? So how big is our universe really? Scientists today estimate it to be 28.5 Giga-Parsecs in width. To find the edge, we should first know the dimensions of the universe. Before we get started, let's look into some facts. Travelling across the universe isn’t just travelling through space, but through time as well. Let me take you all on a journey into the abyss that this universe is, a place where darkness itself fears to exist. It is incredibly frightening, but from time and again, curiosity burns the will to explore beyond. ![]() ![]() ![]() The human mind is always drawn towards the unknown. ![]()
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