Questions for “Strange but true: White dwarfs shrink as they gain mass”
![planetary nebula NGC 2440](https://www.snexplores.org/wp-content/uploads/2020/08/080520_mt_white-dwarf_feat-1028x579.jpg)
White dwarfs, like the one inside NGC 2440, the planetary nebula pictured here, have a strange property. The more mass these super-dense stars gain, the smaller they get.
K. Noll/STScI, ESA, NASA