A White Dwarf’s Strange Gas Disk May Be Fed by a Dying Planet
A young white dwarf’s strange gas disk may be fed by a Neptune-like planet losing its atmosphere—but key clues remain unresolved.
white dwarfs
Four Peaks Around a Dead Star Hide a Two-Ring Planetary Riddle
A white dwarf’s four-peaked spectral lines may reveal two gas rings—and perhaps surviving planetary bodies—circling the star’s remains.