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Planets in our solar system are categorized as inner planets and outer planets.

The inner planets are Mercury, Venus, Earth, and Mars, while the outer planets are Jupiter, Saturn, Uranus, and Neptune. Pluto is now no longer considered a planet but a dwarf planet.

Do you know what planetary alignment is? Planetary alignment is the appearance of all the planets of our solar system in the same 180-degree wide pane of the sky. As the Earth orbits around the sun, inner planets like Venus and Mercury appear to shift positions quickly as compared to outer planets like Jupiter, Saturn, and Neptune. The last impressive planetary alignment occurred in April 2002. During this time Jupiter, Saturn, Mars, Venus, and Mercury were visible on the western horizon resembling the shape of a celestial necklace.

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