Massive galaxy cluster MACS J0717
four galaxy clusters in collision
Credit: NASA, ESA, CXC, C. Ma, H. Ebeling, and E. Barrett (University of Hawaii/IfA), et al., and STScI
four galaxy clusters in collision
Credit: NASA, ESA, CXC, C. Ma, H. Ebeling, and E. Barrett (University of Hawaii/IfA), et al., and STScIThis composite image shows the massive galaxy cluster, MACS J0717, (for short), where four separate galaxy clusters have been involved in a collision — the first time such a phenomenon has been documented.
The repeated collisions in MACS J0717 are caused by a 13-million-light-year-long stream of galaxies, gas, and dark matter — known as a filament — pouring into a region already full of matter.
April 16, 2009
Hubble News Release Archive: Galaxy
Now that's a cosmic light show!
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