Drawn from the object itself · at its own proportions
Pick a place on today’s Earth and it rides every world: as time moves, the view travels with it, and a pin says what was there.
Estimated. The place is turned back with the PALEOMAP plate model, the same model these worlds are drawn after. The older the world, the less certain the place: by the Ediacaran it could be hundreds of miles either way, and near a plate boundary the model may put you on the wrong side of the line. Before 750 million years no reconstruction of this kind exists.
Your place stays with you. It is worked out in this page, in your browser. It is never sent to us or to anyone, never saved, and no cookie is set; reload the page and it is gone. Tapping the planet uses no location at all; the location button uses your browser’s own permission, which you can refuse.