jeff Mitchel Posted February 5, 2009 Share Posted February 5, 2009 Is there any direction in the sky where blue shift galaxies are more prevalent. Thanks for any answers. Link to comment Share on other sites More sharing options...
SH3RL0CK Posted February 5, 2009 Share Posted February 5, 2009 No single direction overall as space itself is expanding in all directions. However there are some local galaxys which are heading our direction (or we are heading its direction). For example, we will probably collide with the Andromeda galaxy in about 2-3 billion years. The Andromeda galaxy has a very slight blue shift for this reason. Link to comment Share on other sites More sharing options...
Airbrush Posted February 5, 2009 Share Posted February 5, 2009 For the reasons above we would not see any blue shifted galaxies outside our local group. Blue shifts only occur within a galaxy cluster where galaxies are orbiting their combined center of mass, and only when such galaxies are coming together for a collision. Link to comment Share on other sites More sharing options...
insane_alien Posted February 5, 2009 Share Posted February 5, 2009 Airbrush, i think you should know that jeff here tends not to agree with modern cosmology, even the observations. iirc he believe that all the galaxies are in orbit of some point but he's not sure where it is or how to find it. Link to comment Share on other sites More sharing options...
NowThatWeKnow Posted February 5, 2009 Share Posted February 5, 2009 For the reasons above we would not see any blue shifted galaxies outside our local group. Blue shifts only occur within a galaxy cluster where galaxies are orbiting their combined center of mass, and only when such galaxies are coming together for a collision. What about colliding galaxy clusters? I would think they should show a blue shift galaxy from out side their own cluster. Link to comment Share on other sites More sharing options...
jeff Mitchel Posted February 6, 2009 Author Share Posted February 6, 2009 (edited) There was a gentleman who did a study of the blue shift galaxies of the NED and found that most were located in two directions, 180 degrees apart. I was wondering what directions those were. Jeff Edited February 6, 2009 by jeff Mitchel spelling Link to comment Share on other sites More sharing options...
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