Why is Pluto Not a Planet anymore? + more videos | aumsum kids science [15tyGngcm14]

AumSum was lying under the night sky, gazing at the sparkling stars. His eyes rested on Pluto, glowing faintly at the edge of the Solar System. He remembered it was once called the ninth planet, but no longer carried that title. Curious to know why, AumSum spread his arms and soared into space. He zoomed past Mars, darted by the storms of Jupiter, and glided over Saturn’s dazzling rings. At last, he reached Pluto, a small icy world where the Sun looked like a tiny dot in the sky. AumSum landed on its frozen ground. Suddenly, the calm silence broke. From the swirling Kuiper Belt came a rush of icy debris. Huge boulders of rock and ice tumbled through space, making the orbit crowded and messy. AumSum quickly recalled the three rules of being a planet. The first was orbiting the Sun, which Pluto did. The second was being round in shape, which Pluto was. But the third rule demanded clearing the neighborhood. Huge boulders of rock and ice were swirling wildly in Pluto’s neighbourhood. Pluto tried hard to pull them away with its gravity but to no avail. Twisting and dodging, Aumsum finally escaped the storm of debris. Catching his breath, he understood the answer. Pluto could not clear its orbit, and that was why it was called a dwarf planet.