* Red dwarfs: These are the smallest and coolest stars, making up about 85% of all stars in the Milky Way. They are significantly smaller than the Sun, often only a few times the size of Jupiter.
* White dwarfs: These are the dense, hot remnants of stars like the Sun after they have exhausted their nuclear fuel. While they are incredibly small compared to the Sun, they are much more massive, packing the mass of the Sun into the size of the Earth.
* Neutron stars: These are even smaller and denser than white dwarfs, formed after the core of a massive star collapses in a supernova. They are only about 20 km (12 miles) in diameter, but contain the mass of several Suns.
Important Note: While these stars are smaller than the Sun in physical size, they can have vastly different masses. For instance, neutron stars, though small, are incredibly dense and contain much more mass than the Sun.
