An international team of researchers has found for the first time that the connection between a galaxy cluster and surrounding dark matter is not characterised solely by the mass of clusters but also by their formation histor
Astronomers have detected a massive, sprawling, churning galaxy cluster - about 1,000 times more massive than our Milky Way galaxy - that formed only 3.8 billion years after the Big Bang.
Stars with masses greater than about 20 times the mass of our Sun may produce black holes at the end of their lives and these matter-sucking monsters could get really big, according to a new study.
A team of astronomers harnessing the combined power of NASA's Hubble and Spitzer space telescopes have found the faintest object ever (a galaxy) seen in the early universe. It existed about 400 million years after the Big Ban
Astronomers using data from NASA's Fermi Gamma-ray Space Telescope have detected hints of periodic changes in the brightness of a so-called "active" galaxy, whose emissions are powered by a supersized black hole.
A team of astronomers has discovered 250 tiny galaxies that existed 600 to 900 million years after the Big Bang. Observations by the NASA/ESA Hubble Space Telescope have taken
A team of researchers has discovered distant galactic halos. A study of spiral galaxies seen edge-on has revealed that halos of cosmic rays and magnetic fields above and below the galaxies' disks are much more common than pre