CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -A white dwarf is a small, very dense, hot star that is made mostly of carbon. These faint stars are what remain after a red giant star loses its outer layers. They are about the size of the Earth and will eventually lose their heat to become a cold, dark black dwarf.

Detailed explanation-2: -A star like our Sun will become a white dwarf when it has exhausted its nuclear fuel. Near the end of its nuclear burning stage, such a star expels most of its outer material (creating a planetary nebula) until only the hot (T > 100, 000 K) core remains, which then settles down to become a young white dwarf.

Detailed explanation-3: -A relatively small, dense star at the end of its life cycle, which generates little energy creating a faint white light and has contracted to its densest state. What stage in the life cycle does this describe? White Dwarf.

Detailed explanation-4: -At the end, gravity always wins. After the star has lived through its red giant stage, the fusion essentially ends (the star runs out of fuel) allowing gravity to collapse the star. Some of the outer layers of material will be blown away and the core becomes smaller and denser.