quasar
Cosmic curiosity reveals ghostly glow of dead quasar
New Haven, Conn. — While sorting through hundreds of galaxy images as part of the Galaxy Zoo citizen science project two years ago, Dutch schoolteacher and volunteer astronomer Hanny van Arkel stumbled upon a strange-looking object that baffl…
Giant Cosmic Lens Reveals Secrets of Distant Galaxy
Using the National Science Foundation’s Very Large Array (VLA) radio telescope and helped by a gigantic cosmic lens conveniently provided by nature, an international team of astronomers has discovered that a young galaxy had a central disk of gas in which hundreds of new stars were being born every year — at a time when the Universe was only a fraction of its current age.
Black holes seeding universe with the stuff of life?
Supermassive black holes, notorious for ripping apart and swallowing stars, might also help seed interstellar space with the elements necessary for life, such as hydrogen, carbon, oxygen and iron, scientists say. Using NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton satellite, scientists at Penn State University and the Massachusetts Institute of Technology found evidence of high-speed winds blowing away copious amounts of gas from the cores of two quasar galaxies, which are thought to be powered by black holes.