A double quasar spiraling toward a great merger has been discovered lighting up the “cosmic dawn,” just 900 million years after the Big Bang. They are the first quasar pair spotted that far back in cosmic time. Quasars are rapidly growing supermassive black holes in the cores of hyperactive galaxies. Torrents of gas are thrust […]
Tag: quasars
Most quasars are a ferocious force of nature, but not this one
A composite image of the quasar H1821+643, with X-ray data from Chandra in blue and radio wavelength data from the Very Large Array in red showing the lobes of the radio jets, which are aimed almost directly at us. One of the closest quasars to our Milky Way galaxy is behaving in a surprisingly timid […]