This moon-sized white dwarf is the smallest ever found
The dead star is also spinning extremely fast and has a powerful magnetic field
![illustration of a newfound white dwarf star](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/06/062921_ec_white-dwarf-moon_feat.jpg?fit=1030%2C580&ssl=1)
With a radius of about 2,100 kilometers, a newfound white dwarf (left in this illustration) is just slightly bigger than the moon (right).
Giuseppe Parisi