The Fission Theory: This theory proposes that the Moon was once part of the Earth and somehow separated from the Earth early in the history of the solar system.
This provides modular approach to programming. Classes. A class is a concept used in object oriented programming languages such as C++, PHP, and JAVA etc. Apart from holding data, a class is also used to hold functions. An object is an instant of a class. In case of variables, the type is the class whereas the variable is the object.
A lot of OOP fanatics will tell you that the class is an object, and the static method is a method of the class object, rather than it's instances. This phenomenon is less present in Java. Other languages, such as Python allow you to use classes as variables and you can access static methods as methods of that object.