White Dwarfs - Imagine the Universe!
https://imagine.gsfc.nasa.gov/science/objects/dwarfs1.html
Low-mass stars become highly unstable and start to pulsate, producing strong stellar winds that throw off their outer layers. The outer layers drift away, leaving a small hot, bright core behind, which becomes a white dwarf. The white dwarf is formed after the star sheds its outer layers to form a planetary nebula. The planetary nebula eventually dissipates, leaving the white dwarf alone in the center.
Low-mass stars become highly unstable and start to pulsate, producing strong stellar winds that throw off their outer layers.
The outer layers drift away, leaving a small hot, bright core behind, which becomes a white dwarf.
The white dwarf is formed after the star sheds its outer layers to form a planetary nebula.
The planetary nebula eventually dissipates, leaving the white dwarf alone in the center.
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