97825972_mi_paradox_meets_the_timescale__Alien_s_comments
[Time (Ma)] 1533 [Time (name)] Mesoproterozoic [My comment] Mt Isa is forming [Alien's comments] 
If these aliens came for resources, they didn't want base metals
Lounge of the Lab Lemming: Fermi paradox meets the timescale
Alien's comments