Human DNA hasn't changed much in thousands of years.
Evidence of Human habitation exists before 4000 BCE.
The Oort Cloud exists.
The universe is around 13-14 billion years old.
The earth is around 4 billion years old (fact check me).
Humans evolved from an earlier species which also split off into chimpanzees.
Humans are evolving on a daily basis to combat pathogens, viruses and other baddies.
Viruses and Bacteria mutate like the fucking wind.
Get the fuck over it!