This is neat.
Geologists have been trying to figure out the origins of our planet since forEVA and every tiny step forward is pretty major. So major, Smithsonian covers it.
This new comet dust is viewed as "starting material for our solar system, the stuff that came together to make everything we see," consisting of very high temperature forming minerals and glycine. So in a nutshell, this comet sample hints at the building blocks of Earth and Life.
It's a bit like magic dust.