years its been since earth was attacked

[666mt]

how many years has it been since the earth was attacked?

 

[The Alchemist7 [SG]]

how many years has it been since the earth was attacked?

I would say last attack (if they were more) was once with the sink of Atlantis about 11.000 - 12.000 years ago. But it was rather an indirect attack as it was caused by the huge amount of waters falling from the space from a planet that Corrupted Beings destroyed.