NASA’s Photo of the Day features the star Polaris shining brightly in the sky.
According to RCO News Agency, The star “Polaris” (Polaris) or the pole star is also called the North Star because it is the closest bright star to the Earth’s northern rotation axis. As the Earth rotates, the stars appear to revolve around Polaris, but Polaris itself always remains in the same north direction, earning it the name North Star.
According to NASA, Because there are no bright stars near Earth’s southern axis of rotation, there is currently no bright south star. Thousands of years ago, the direction of the Earth’s rotation axis was slightly different; So that “Vega” was the North Star.
Although Polaris is not the brightest star in the sky, it is easy to find because it is almost in line with two stars in Ursa Major.
Polaris is seen near the center of the photo. This image is a digital composite of hundreds of exposures showing the faint gas and dust of the Integrated Flux Nebula (IFN).
The surface of Polaris pulsates slowly, causing this famous star to change a few percent of its brightness over several days.
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