apr 022013
Anne's Picture of the Day: Star-Forming Region NGC 206

April 2, 2013 NGC 206, a star-forming region in the Andromeda galaxy Image Credit: B.J. Mochejska (Warsaw University), The DIRECT Project, FLWO, MDM NGC 206 (also known as OB 78) is a large, bright star forming region of some 4,000 light-years across, nestled within the outer arm of our neighboring Andromeda galaxy (M31) at a [continue reading]

feb 162013
Alternative Gravity Theory Predicts Properties of Dwarf Galaxies

  Using modified laws of gravity, researchers from Case Western Reserve University and Weizmann Institute of Science closely predicted a key property measured in faint dwarf galaxies that are satellites of the nearby giant spiral galaxy Andromeda. The Andromeda Galaxy, our large neighbour galaxy. Image Credit & Copyright: Dieter Beer (http://www.starhopper.at) & Patrick Hochleitner (http://www.photonhunter.at) The [continue reading]

jan 042013
Satellites of the Andromeda Galaxy Imitate a Solar System

  Astronomers using the Canada-France-Hawaii and W. M. Keck Observatory telescopes on the summit of Mauna Kea, Hawaii have been amazed to find a group of dwarf galaxies moving in unison in the vicinity of the Andromeda Galaxy. The structure of these small galaxies lies in a plane, analogous to the planets of the Solar [continue reading]

okt 202012
Anne's Picture of the Day: The Andromeda Galaxy

October 20, 2012 The Andromeda Galaxy, our large neighbour galaxy Image Credit & Copyright: Dieter Beer (http://www.starhopper.at/) & Patrick Hochleitner (http://www.photonhunter.at) The Andromeda Galaxy (Messier 31 or NGC 224) is a barred spiral galaxy of more than 220,000 light-years across, located approximately 2.54 million light-years away in the Andromeda constellation. It is the largest galaxy [continue reading]

jun 122012
Our Neighbor Galaxies Had a Close Encounter

  Two of our Milky Way’s neighbor galaxies may have had a close encounter billions of years ago, recent studies with the National Science Foundation’s Green Bank Telescope (GBT) indicate. The new observations confirm a disputed 2004 discovery of hydrogen gas streaming between the giant Andromeda Galaxy, also known as M31, and the Triangulum Galaxy, [continue reading]

feb 232012
First ultraluminous source in Andromeda galaxy unmasked as stellar mass black hole

Detailed observations show that the first ultraluminous X-ray source detected in our neighbouring Andromeda galaxy is due to a stellar mass black hole swallowing material at very high rates. An international team of astronomers, including scientists at the Max Planck Institute for Extraterrestrial Physics, have now published their findings in two papers. The emission of [continue reading]