My first alphabet is in VAN but not in PAN, My second alphabet is in EARTH and also in HEAVEN, My third alphabet is in ONE and not in TWO, My fourth alphabet is in SUN and also in FUN, ...
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Sirius is not a member of our Solar System. It is the brightest star in the night sky and belongs to a distant star system, whereas comets, asteroids, and Pluto are part of our Solar System.
Pluto is not considered a planet of the Sun. Once classified as the ninth planet, it was reclassified as a dwarf planet in 2006 by the International Astronomical Union due to its small size and irregular orbit.
Sirius is the brighter star compared to the Pole Star. Located in the constellation Canis Major, Sirius is the brightest star in the night sky, while the Pole Star (Polaris) is less luminous but important for navigation.
Light pollution refers to the excessive or misdirected artificial light in urban areas, disrupting natural darkness. It affects stargazing, wildlife, and human health, reducing the visibility of celestial objects and altering ecosystems.