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Distant Solar System Echoes Our Sun's Fiery Future
7 Nov
Summary
- White dwarf J1328-1450 has a unique double ring debris disc.
- Two planetary remnants may orbit within the unusual debris rings.
- This system offers a glimpse into our solar system's distant future.

Researchers have identified a white dwarf, J1328-1450, surrounded by planetary debris arranged in an unusual double-ring structure. This unique formation, observed 1,600 light-years away in the constellation Virgo, differs from the single debris discs seen around other white dwarfs. It suggests that the remnants of planetary systems can exhibit complex structures, supporting the idea that rocky bodies can endure a star's evolution into a white dwarf.
The white dwarf itself is compact, with a mass about 47% of the sun packed into Earth's diameter. The presence of two embedded planetary remnants, possibly ranging in size down to Pluto, may be responsible for shaping the two distinct gaseous rings. This discovery provides a potential glimpse into one possible future for our own solar system in about 5 billion years, when the sun is predicted to become a red giant and eventually a white dwarf.