mei 042013
 
Anne's Picture of the Day: The Sagittarius Dwarf Elliptical Galaxy

May 4, 2013 The Sagittarius Dwarf Elliptical Galaxy Image Credit: R. Ibata (UBC), R. Wyse (JHU), R. Sword (IoA) The Sagittarius Dwarf Elliptical Galaxy (Sag DEG, Sgr dE or the Sagittarius Dwarf Spheroidal Galaxy) is a small elliptical loop-shaped satellite galaxy of our Milky Way that lies about 70,000 light-years away from Earth in the [continue reading]

mrt 062013
 
Has Galactic Black Hole Swallowed its Counterpart?

  These days the core of the Milky Way galaxy is a pretty tame place…cosmically speaking. The galactic supermassive black hole at the center is a sleeping giant. Existing stars are peacefully circling. Although conditions are favorable, there doesn’t even seem to be much new star formation going on. Artist’s conception of satellite galaxy being pulled into [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]

jun 302012
 
The Milky Way Shows Evidence of an Encounter

  The Milky Way is a large spiral galaxy surrounded by dozens of smaller satellite galaxies. Scientists have long theorized that occasionally these satellites will pass through the disk of the Milky Way, perturbing both the satellite and the disk. A team of astronomers from the U.S. and Canada, including four professors from the University [continue reading]