Hubble and NuStar image of Arp 299, also known as NGC 3690. NuSTAR data overlaid on a Hubble image of the interacting galaxy pair show the galaxy on the right has an active supermassive black hole. It is accreting the surrounding gas and glowing brightly in X-rays. Credit: NASA, JPL-Caltech, GSFC Source: https://www.nustar.caltech.edu/image/nustar150108c #ArpGalaxy #Galaxy #Space #Astronony