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In space, the distances between stars, planets, and galaxies are so vast that measuring them in kilometers becomes extremely difficult. For this reason, scientists use a unit called the light-year. Let’s learn together what a light-year is!What Does Light-Year Mean?Light is the fastest thing in the universe, traveling through vacuum at exactly 300,000 kilometers per second. This is millions of times faster than the speed of a car or an airplane! A light-year is the distance that light travels in

The brightest star in the constellation Lyra (Instrument), Vega is also identified as the second brightest star in the night sky after Sun. Vega, located approximately 25 light-years away, is one of the closest stars to World. It is the fifth brightest star in the sky and is estimated to have a lifespan of short. Due to its high energy output, its brightness is continuously increasing, to the point that it is predicted to one day replace the North Star. Vega is also used as a reference for deter