a star expels most of its outer material until only the hot core remains, which then settles down to become a young a white dwarf
The answer to the question "Upon realizing that your remote is not working even after replacing the batteries you decided to use, this process is called the experiment. You are experimenting on what would happen to the remote if you are going to change the batteries, if it is going to work or not.
I believe a valley or mountain, but I am not 100 percent sure.
