> It is hypothesized that two massive R-Process events occurred in mid-air over the Northern Plains of Mars. The R-Process is inferred to occur in astrophysical

> It is hypothesized that two massive R-Process events occurred in mid-air over the Northern Plains of Mars. The R-Process is inferred to occur in astrophysical events, but has been seen on Earth in thermonuclear explosions [10]. In a planetary environment a large R-process event above the planetary surface would create powerful Tunguska-like explosions. Given the nitrogen and carbon dioxide components in the Mars atmosphere such fireballs would be expected generate large amounts of nitric acid. These hypothetical R-Process events caused the 129Xe/132Xe and 40Ar/36Ar excesses and occurred during the epoch of warm dense atmosphere on Mars, and terminated that epoch. R-process: https://en.wikipedia.org/wiki/R-process https://en.wikipedia.org/wiki/R-process