* The Sun is a main sequence star: It's currently fusing hydrogen into helium in its core, generating immense energy and maintaining its size.
* White dwarfs are stellar remnants: They are the dense, Earth-sized cores of stars like our Sun after they have exhausted their nuclear fuel and shed their outer layers.
Here's a comparison:
* Sun's diameter: Roughly 1.39 million kilometers (865,000 miles)
* Typical white dwarf diameter: Around 12,000 kilometers (7,500 miles)
In essence, a white dwarf is about 100 times smaller in diameter than our Sun. While white dwarfs are incredibly dense (a teaspoon of white dwarf material would weigh tons on Earth), they are still much smaller than the stars they were born from.
