Question: what are the different types of stars and their characteristics?
Answer: Yellow Dwarf Stars. Lifetime: 4 - 17 billion years. ... 
Orange Dwarf Stars. Lifetime: 17 - 73 billion years. ... 
Red Dwarf Stars. Lifetime: 73 - 5500 billion years. ... 
Brown Dwarfs. Lifetime: unknown (long) ... 
Blue Giant Stars. Lifetime: 3 - 4,000 million years. ... 
Red Giant Stars. ... 
Red Supergiant Stars. ... 
White Dwarfs.