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Dr. John Brandenburg: Confessions of a NASA Space Scientist

Earth Ancients

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The Xenon 129 Puzzle on Mars

The Xenon 129 puzzle on Mars has been a puzzle for a long time. Articles published in 2021 still call it a mystery. The reason is the Xenon 129 is the cause by the decay of iodine 129, which is produced in nuclear tests and then it decays into Xenon 129. Another thing produced in supernovas and also hydrogen bombs is a substance called plutonium-244.

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