an image of a very large star in the sky

Dual Quasar (Artist's Illustration) Caption: This artist's concept shows the brilliant glare of two quasars residing in the cores of two galaxies that are in the chaotic process of merging. The gravitational tug-of-war between the two galaxies ignites a firestorm of star birth. Credits: Artwork - NASA, ESA, Joseph Olmsted (STScI)