@oristarA,
"The idea that Earth’s place among the stars is nothing special" came from Copernicus.
This idea was then extended to the universe as a whole, an idea which is now called the "cosmological principle, which says "that nowhere in the universe is special."
Put another way, people now generally believe that the earth is NOT the center of the universe. It is not "special" in that way.
With some qualifications, people also now generally believe that there is no such "special" place (or, at least, that if there is one, we could never detect it). Arguments can still be made that there is a "center" of all mass in the universe (aka "the great attractor") and that, as such, all matter is revolving around it and/or moving toward it.