Pyramids! You do think man could create that! then for you,i am superman.. in simple words, Aliens!!

Ok before this,understand aliens do exist...our galaxy is so big,trillion galaxies,do u realize that? and earth! just a little dot in somewhere in a little galaxy from those Crore galaxies.. We are so helpless,so small we cant even reach out from our own solar system,crossing galaxy is a way impossible thing..

we don't know about our solar system even our planet only 11% of sea are known well to humans ,above 65000+ sea animals/mammals what so ever you say them isn't found..

 Just try to understand that,yo are on a dust particle in universe,so you just cant talk about it..

we can use only around 9% brain of us,so so much covered inside our own body too.

and further more, This earth! it can be destroyed in 0.01 seconds from the universal powers,no one will ever know there was a earth,or a solar system,or humans or you reading this. Boom