That rock came here from god knows where, probably it was floating around in space for many many years
Don't sell yourself short, you yourself were floating around in space for about ten billion years. Or at least, your constituent atoms were. :)
"We, who embody the local eyes and ears and thoughts & feelings of the cosmos, we’ve begun - at last - to wonder about our origins. Star stuff, contemplating the stars, organized collections of ten billion, billion, billion atoms, contemplating the evolution of matter, tracing that long path by which it arrived at consciousness here on the planet Earth and perhaps - throughout the cosmos." ~ Carl Sagan
Don't sell yourself short, you yourself were floating around in space for about ten billion years. Or at least, your constituent atoms were. :)
"We, who embody the local eyes and ears and thoughts & feelings of the cosmos, we’ve begun - at last - to wonder about our origins. Star stuff, contemplating the stars, organized collections of ten billion, billion, billion atoms, contemplating the evolution of matter, tracing that long path by which it arrived at consciousness here on the planet Earth and perhaps - throughout the cosmos." ~ Carl Sagan