Detail View: NASA Astronomy Picture of the Day Collection: A Peculiar Cluster of Galaxies

Title: 
A Peculiar Cluster of Galaxies
Explanation: 
Far across the universe, an unusual cluster of galaxies [ http://crux.astr.ua.edu/white/mug/cluster/clusters.html ] has been evolving. A diverse group of galaxies populate this cluster, including, on the left, an unusual galaxy showing an equatorial polar ring [ http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1986MNRAS.219..657S ] and a large spiral [ http://antwrp.gsfc.nasa.gov/apod/ap961030.html ]. Above looms a large elliptical galaxy [ http://antwrp.gsfc.nasa.gov/apod/ap961106.html ]. The reason for the small size of galaxies on the right is not yet known - these galaxies might be smaller or might just lie even farther in the distance. Almost every spot in this picture [ http://www.eso.org/outreach/press-rel/pr-1998/pr-14-98.html ] is a galaxy. Studying distant clusters [ http://antwrp.gsfc.nasa.gov/apod/ap980908.html ] like this may help astronomers better understand when and how these cosmic giants formed.
Credit and Copyright: 
FORS1 [ http://www.eso.org/instruments/fors1/fors.html ], 8.2-meter VLT [ http://www.eso.org/projects/vlt/ ], ESO [ http://www.eso.org/ ]
keyword: 
cluster of galaxies
facet_where: 
Goddard Space Flight Center (GSFC)
facet_what: 
Crux
original url: 
http://antwrp.gsfc.nasa.gov/apod/ap980929.html
UID: 
SPD-APOD-ap980929