VISUAL ARCHIVE / IMAGE STORY
Two Isotopes and Different Histories
Iron-60 records distinct episodes of supernova-related deposition approximately 2.4 and 7.2 million years ago.
Iron-60 records distinct episodes of supernova-related deposition approximately 2.4 and 7.2 million years ago. Plutonium-244 follows a different pattern, suggesting that its origin cannot be explained by those same explosions. AI-generated conceptual illustration; not a plot of the measured data.
THE OBSERVATION
What we can actually see.
The reported plutonium influx is not significantly correlated with the better-defined iron-60 deposition peaks associated with nearby supernova-related material. Under a conserved curium-to-plutonium ratio, the curium limit yields an age bound above roughly 70 million years. Applying the authors’ estimated relative chemical enrichment in the crust moves the bound above about 95 million years. These are production-age constraints, not the age of the sampled crust layer.
THE ILLUSTRATION
What the artwork imagines.
Iron-60 records distinct episodes of supernova-related deposition approximately 2.4 and 7.2 million years ago. Plutonium-244 follows a different pattern, suggesting that its origin cannot be explained by those same explosions. AI-generated conceptual illustration; not a plot of the measured data. The viewpoint, illumination, colors and simultaneous arrangement are artistic choices. This is a cinematic illustration, not a direct instrument image or a quantitative reconstruction of every feature.
FROM THE ILLUSTRATED ARTICLE
The story that inspired it.
Traces of plutonium-244 in Pacific crust carry a record of heavy-element production beyond Earth. Missing curium helps constrain when that production occurred, but the oldest headline estimate depends on how the crust incorporated the elements. This frame focuses on two isotopes and different histories, within the complete illustrated article and its source-linked research context.
Read They Found Plutonium at the Bottom of the Pacific. The Explosion That Made It May Be Over 95 Million Years Old.CHECK THE RECORD
The image interprets the research below. Follow the original work for the measurements and limits behind the scene.
The timing of the last r-process event near Earth from interstellar 60Fe, 244Pu and 247Cm deposition on Earth Wallner and colleagues: open Nature Astronomy articleOTHER IMAGE STORIES
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