It probably has something to do with how the moon goes around the earth due to the gravitational pull and how an apple falls because of gravity as well. Even though the moon isn't falling onto the earth, they are still both following a set of rules that have to do with gravity.
She felt sad because she had been looking forward to it and now the days were longer without him.
Answer:
A summary of points (as in a writing) normally expressed in skeletal form is often known as an abstract. It is something that outlines or concentrates the fundamentals of a greater thing or many items. 2 : a condition or thing that is abstract. as an illustration He was far too enslaved by emotion and concrete creativity to be capable of great intellectual thinking. "I do not regard land as an abstract thing; it is a creature of civil society," Gladstone said. He didn't, though, limit his questions to the abstract.