Clarify why the statement, “An average-sized star, like our Sun, will eventually explode into a planetary nebula and then create a white dwarf.

Our Sun
Let’s being ; as it begins to run out of fuel. The sun won’t simply fade away to nothing. It’s core will collapse and the extra heat this generates will cause its outer layers to expand. “BOOM!” - now the sun is dead - remains slowly cooling. In the freezing temperatures of deep space.

               

Does the meme have to be funny educational or both