NASA's Hubble Space Telescope has observed early Universe's brightest-ever known object, a star-producing quasar as bright as 600 trillion Suns. Light received from the 12.8 billion-year-old object started its journey when the universe was around 7% of its present age. The quasar is estimated to produce about 10,000 stars per year, as opposed to one by the Milky Way galaxy.