Abell 2744, Pandoras Cluster, MACS J0416.1-2403, MACS J0717.5+3745, MACS J1149.6+2223
Abell 2744 (top left)
Data were obtained as part of the HST proposal 11689: R. Dupke (Eureka Scientific Inc.) et al.
MACS J0416.1-2403 (top right)
Data were obtained as part of the HST proposal 12459: M. Postman (STScI) and the CLASH Team
MACS J0717.5+3745 (bottom left)
Data were obtained as part of HST proposal 10420: H. Ebeling (University of Hawaii) et al.
MACS J1149.5+2223 (bottom right)
NASA, ESA, and Z. Levay (STScI/AURA)