Astronomers have found the lowest mass white dwarf known in our galaxy: a Saturn-sized ball of helium
containing only about one-fifth the mass of the Sun. In addition, they have spotted the source of the
white dwarf's radical weight-loss plan. An unseen companion, likely another white dwarf, has sucked away
much of the tiny white dwarf's material, leaving it a shadow of its former self.
Harvard-Smithsonian Center for Astrophysics press release
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