The common idea presented in both ‘our solar system: In-Depth’ & ‘Our Solar System’ is our solar system in detail.
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Both of them talk about the solar system, the sun, and its planets, their constituents, sequence of the location of the planets in reference to the sun, their formation and significance.  
Besides the solar system, the former also talks about the Milky Way, its formation, the explosion of two supernovas that led to the formation of solar systems, and other constituents of the Milky Way - a spiral mass and our galaxy, one among many others in the big universe.
It also gives a reason behind the location of the first four planets near the sun and the gaseous and icy masses away from the sun.  
It also talks about the other masses that are there in the Milky Way like the asteroids and comets.
 
        
             
        
        
        
Answer: You could do a story about the weight of gravity.
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The interpretation of the "farewell speech by Polonius to Laertes is given below:
"Try to think of it like that, anyway. When a youth grows into a man, he doesn’t just get bigger in his body—his responsibilities grow too. He may love you now, and may have only the best intentions, but you have to be on your guard. 
Remember that he belongs to the royal family, and his intentions don’t matter that much—he’s a slave to his family obligations. He can’t simply make personal choices for himself the way common people can, since the whole country depends on what he does. His choice has to agree with what the nation wants.
So if he says he loves you, you should be wise enough to see that his words only mean as much as the state of Denmark allows them to mean.
Then think about how shameful it would be for you to give in to his seductive talk and surrender your treasure chest to his greedy hands. Watch out, Ophelia. Just keep your love under control, and don’t let yourself become a target of his lust. 
Simply exposing your beauty to the moon at night is risky enough—you don’t have to expose yourself to him. Even good girls sometimes get a bad reputation. Worms ruin flowers before they blossom. Baby blooms are most susceptible to disease. So be careful. Fear will keep you safe. Young people often lose their self-control even without any help from others."
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