* "Dwarf star" is a broad category: It encompasses several types of stars, each with a wide range of sizes.
* Types of dwarf stars:
* Red dwarfs: The most common type. They are much smaller and cooler than our Sun, with diameters typically ranging from 0.1 to 0.6 times the Sun's diameter (which is about 1.39 million kilometers).
* White dwarfs: These are the dense, collapsed cores of stars that have exhausted their nuclear fuel. They have diameters roughly comparable to Earth's (about 12,756 kilometers).
* Brown dwarfs: These are "failed stars" that never achieved enough mass to ignite nuclear fusion. Their diameters are roughly comparable to Jupiter (about 140,000 kilometers).
* Variable sizes within each type: Even within a specific type of dwarf star, there is a considerable range of sizes.
Therefore, to get a diameter in kilometers, you need to specify the type of dwarf star you are interested in.
