Currently, the most comprehensive star map is created by the Gaia spacecraft, launched by the European Space Agency in 2013. As of November 2022, Gaia has accurately mapped the positions, distances, and motions of nearly 1.7 billion stars in our Milky Way galaxy. This represents a tiny fraction of the estimated 100-400 billion stars in our galaxy, but it's the most detailed map we have of any region of space.