List 3 ways the sun is different from the planets

1. The Sun is mostly made up of hydrogen. The planets are not

2. The Sun (and all other stars) under go a process called "nuclear fusion". Which is what produces a star's energy. Planets do not do this.

3. Stars go through drastically different phases in their life. Starting as a Nebula that condenses into a star, that star then turns into a Red Giant. It explodes in a Supernova then becomes a White Dwarf or Black Hole depending on it's size.