>>3485338 (lb)
>" IN THE MODERN ERA , YES ".
There have been occurrences of naturally occurring nuclear fission. Not sure there would be evidence of an explosion.
https://en.wikipedia.org/wiki/Oklo
>>3485338 (lb)
>" IN THE MODERN ERA , YES ".
There have been occurrences of naturally occurring nuclear fission. Not sure there would be evidence of an explosion.
https://en.wikipedia.org/wiki/Oklo