When a star, like our sun, reaches the end of its life, it surges into a red giant and rips off its external layers. Theorists speculated that white dwarfs presenting sign of heavy metals turn out to be 'polluted' when they consumed rocky planets or asteroids.
Though, the proof was often indirect. A portion of polluted white dwarfs presented signs of adjacent debris disks, but the source of the disks was uncertain.
This system displays all three: a polluted white dwarf, a neighboring debris disk, and at least one dense, rocky object.
What is positive is that the residual objects will not last forever.
They are being vaporized by the extreme heat of the white dwarf. They also are circling very close to the tidal radius, or distance at which gravitational tides from the white dwarf can tear apart a rocky object.
This system show the future of our solar system. Scientists say that, in the situation of Earth's solar system, the sun will grow to consume Mercury, Venus and probably Earth in about 5 billion years just like in this system.