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“Look and think before opening the shutter. The heart and mind are the true lens of the camera.” -Yousuf Karsh
When you find an incredibly huge, dense collection of mass, all together in one place, it generally indicates a galaxy cluster of tremendous size.
Image credit: NASA, ESA, G. Tremblay (ESO), M. Gladders and M. Florian (University of Chicago), S. Baum, C. O’Dea, K. Cooke (RIT), M. Bayliss (Harvard-Smithsonian Center for Astrophysics), H. Dahle (University of Oslo), T. Davis (ESO), J. Rigby (NASA/GSFC), K. Sharon (University of Michigan), E. Soto (Catholic University of America), and E. Wuyts (Max Planck Institute for Extraterrestrial Physics); Acknowledgment: NASA, ESA, and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration.
Under circumstances like this, the phenomenon of gravitational lensing is often ubiquitous, with serendipitously placed background galaxies getting stretched into arcs, rings, and multiple images across the sky. But in rare, spectacular cases, we can catch two giant elliptical galaxies in the act of merging, leading to phenomena — like the formation of strings of super star clusters — never before seen on scales this large.
Image credit: NASA, ESA, G. Tremblay (ESO), M. Gladders and M. Florian (University of Chicago), S. Baum, C. O’Dea, K. Cooke (RIT), M. Bayliss (Harvard-Smithsonian Center for Astrophysics), H. Dahle (University of Oslo), T. Davis (ESO), J. Rigby (NASA/GSFC), K. Sharon (University of Michigan), E. Soto (Catholic University of America), and E. Wuyts (Max Planck Institute for Extraterrestrial Physics); Acknowledgment: NASA, ESA, and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration.
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