Barnacles
That imaginary line is called as "ORBIT".. Each space object spins around itself, in a particular path called as "ORBIT"
The energy itself is called "heat" or thermal energy. The process is called heat transfer and for objects in contact, it is "conduction" (as opposed to convection or radiation).
The color of an object is a result of how that object interacts with light. Objects reflect, absorb, and transmit certain wavelengths of light, which our eyes perceive as color. The color is not within the object itself, but rather is a perception created by our visual system based on the light interacting with the object.
See horse
[object Object]
It is called rotation.
cement
The wavelength of light used to observe an object must be shorter than the size of the object itself.
The object has energy.
The object has energy.
The object has energy.
grass