Have you ever thought about what will happen to your solar system’s “perfect harmony” if it loses a planet? For example, the closest planet to the Sun is Mercury, right? Oh, it’s so small! So with Mercury gone, how’s Earth looking? Hmm, no changes in the solar system. It’s all about gravity. 

Every object that has some mass attracts other objects because of its gravitational force. The larger the mass, the greater the force it has. Mercury is the smallest planet in the solar system, so it’s not too massive in space terms. But what about other planets? 

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