Study Offers Potential Clues to Gold's Cosmic Origins

MAY 5 2025·Updated MAY 6 2025

Story

Above: A refiner holds a gold brick after it was removed from a cast at the ABC Refinery smelter in Sydney on April 29, 2025. Image credit: DAVID GRAY/Contributor/AFP via Getty Images

The Facts

A new study suggests that gold's cosmic origins may have become clearer as scientists discovered that powerful flares from magnetars — highly magnetized neutron stars — might forge up to 10% of the universe's heavy elements, including gold.
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The findings, published April 29 in The Astrophysical Journal Letters, challenge the long-held belief that such elements are produced exclusively through neutron star collisions (kilonovas). When magnetars undergo "starquakes," similar to earthquakes, they can release flares that eject neutron-rich material, potentially creating heavy elements like gold.
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The Washington Post
The "kilonova" theory gained strong support in 2017 when astronomers directly observed such a collision producing gold and other heavy elements. However, these mergers occur relatively late in the universe's history, raising questions about how heavy elements appeared in early stars.
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The Times of India
The researchers found evidence for their theory by examining data from a powerful magnetar flare detected in December 2004. The gamma-ray signal matched theoretical predictions of what would be expected if heavy elements were being created during the flare.
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The Washington Post
Magnetars likely formed after the first stars 13.6 billion years ago, possibly explaining early heavy elements. Unlike neutron star mergers, which occurred later, magnetar flares could have produced gold and similar elements early enough to appear in ancient stars.
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NASA's COSI mission, launching in 2027, will detect gamma rays from magnetar flares and may confirm if they create elements like gold. It could identify specific elements formed in these flares, offering key insights into the true origin of heavy elements in the universe.
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The Spin

Narrative A

This discovery represents a paradigm shift in our understanding of cosmic chemistry. Magnetar flares solve a critical timing problem in astrophysics by explaining how gold and other precious metals appeared so early in the universe's history. The gamma ray signature from the 2004 magnetar flare provides a smoking gun that these violent stellar events are indeed cosmic gold factories.

NASA Science

Narrative B

While intriguing, the magnetar theory is just one possible explanation for the gamma-ray glow. These chaotic stars may not consistently create the precise conditions needed to form gold. Instead, they might produce lighter elements like silver. More data is needed before confirming magnetars as cosmic gold sources.