>>11156106It says "barium surrendered neutrons that got picked up by xenon to produce higher-than-expected levels of the isotopes xenon-124 and 126."
But for xenon-129 is just says Mars has much higher levels than Earth. It didn't specifically say it happened the same as the other isotopes. "The atmospheres of Earth and Mars exhibit very different patterns of xenon and krypton isotopes, particularly for xenon-129. Mars has much more of it in the atmosphere than does Earth."
