NGC 604 is region of star formation inside the Triangulum Galaxy, an estimated 2.7 million light-years away. It’s huge, roughly 1,520 light-years across which makes it over 40 times the size of the visible portion of the Orion Nebula near us in the Milky Way. It’s also incredibly bright. If it were as close to us as the Orion Nebula, it would outshine Venus.
Image Credit: NASA