text: give an overview on how our galaxy was discovered.?   the milky way was first "discovered" (if you can call it that) by using nir sensors to see through all the dust blocking it from view. now, by tracking the movements of stars and collecting more data from a whole spectrum of radiation (including measuring redshifts and absorption patterns) we have figured out the shape, size and the position of our solar system within our galaxy.  don't know if that answers the question at all.