https://www.theregister.co.uk/2018/05/18/uv_galaxy_map/

Astronomers have published the largest ultra-violet survey of the local universe, showcasing 50 active galaxies in high resolution using NASA’s Hubble Space Telescope.

The project nicknamed LEGUS (Legacy ExtraGalactic UV Survey) captures a whopping 39 million hot blue stars and about 8,000 star clusters within a 60 million light year radius around Earth. The stars range from one to several billions years old, and are bunched together in groups ten times more massive than the largest ones seen in our Milky Way galaxy.