Astronomers using NASA’s Hubble Space Telescope have found that Markarian 231 (Mrk 231), the nearest galaxy to Earth that hosts a quasar, is powered by two central… Read more “Nearest quasar is powered by a double black hole”

With Pluto receding in the rear view mirror, New Horizons now has its sights set on a second target. Pending final approval by NASA, an icy boulder… Read more “Life after Pluto: New Horizons to head for Kuiper belt boulder”