You do know when a nuclear or atomic bomb explodes it sends ripples across space. They probably was interested in what the fukk we as humans were doing with so much power that can wipe out the entire lifeforms on this planet
ok
1. it's relatively not that powerful, it can't even b adapted for interplanetary travel fast enough to be relevant to the human life cycle, so you have to realize that if aliens are traveling accross galaxies to visit us, that 1. they travel really fast with shyt that makes nuclear weapons look like pop guns or 2. they travel as fast as us and have lifespans that make us look like fleas and travel here to stay or their travels here are irrelevant to humans given our galactically short lifespans
2. the entire genetic code of all the lifeforms on this planet could be stored for preservation on a a few blurays
so any alien technologically advanced enough to travel across galaxies and altruistic enough to give a f*ck about life on this dust mote could simply collect all the dna samples and go about their business
in the interest of fun conversation and honesty, I will say that your presumption smacks of the trained delusion of self importance that we humans tend to be raised with :zfg: