GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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ROCK
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MOON
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PLANETS
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ASTEROIDS
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Detailed explanation-1: -A planet is a large spherical celestial body moving in an elliptical orbit around a star. A planetary system is a set of gravitationally bound celestial objects in orbit around a star or star system. Planets with orbiting moons are planetary systems.
Detailed explanation-2: -It takes 248 Earth years for Pluto to complete one orbit around the Sun. Its orbital path doesn’t lie in the same plane as the eight planets, but is inclined at an angle of 17°. Its orbit is also more oval-shaped, or elliptical, than those of the planets.
Detailed explanation-3: -in 2006, the International Astronomical Union (IAU) redefined a planet as a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighboring region of planetesimals.