Clusters of Unusual Size? I don't believe they exist!

http://www.youtube.com/watch?v=mwWcYyhrN_I

Post your favorites here:

Williamston et al.
http://adsabs.harvard.edu/abs/2011arXiv1101.1290W

Foley et al.
http://adsabs.harvard.edu/abs/2011arXiv1101.1286F

One HST abstract from RCS2...
http://adsabs.harvard.edu/abs/2006hst..prop10846G