Remnants of oldest known solar system discovered 90 light-years from Earth

The oldest dead star known to have had a system of rocky planets has been discovered just 90 light-years from Earth and provides insight into the makeup of worlds that formed nearly 11 billion years ago.

The star is a so-called white dwarf, a stellar corpse that ran out of hydrogen in its core. Born like a regular star 10.7 billion years ago (only 3 billion years after the big Bang), the stellar corpse, named WDJ2147-4035, is one of two white dwarfs polluted by planetary debris that were recently discovered in data collected by the European Space Agency. Gaia galaxy mapping mission.

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