Because the moon and Mars have been intriguing man for centuries - we have left things there. These beings that you say who come here don’t leave anything but lights in the sky.
and how do you know that?
Do you know what lies under a mile of ice at the South Pole?
Or under the sea, only 5% of which has been explored?
WRONG.
There’s more than
3 THOUSAND verified, scientifically investigated cases
wherein there were impacts on the environment that were scientifically measurable and anomolous.
I think there is archeological evidence that someone left something here, a long long time ago, prior to one of the previous destructions of the earth, as described in Mayan calendar cycles
Check out Puma Punku, just one of many otherwise inexplicable mysteries, but maybe the granddaddy of them all