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Bending the Light

This galaxy cluster image of MACS J1206.2-0847 (or 1206 MACS for short) of IS from a Broad survey with NASA's Hubble Space Telescope. The distorted shapes in the cluster galaxies are remote from the Which Light is bent by the gravitational pull of invisible material Called year Within the dark matter cluster of galaxies. This Is An early target cluster in a survey Astronomers That Will allow to construct The Most Detailed dark matter maps of galaxy clusters more Than ever before. Thesis maps are Being Used To test previous, goal surprising, results That Suggest That dark matter is more densely packed clusters inside Than Some models predict. Might this mean galaxy cluster assembly That Began Earlier Than Commonly Thought. The multi-wavelength survey, called Set the Cluster Lensing And Supernova survey with Hubble (CLASH), upright, with unparalleled precision, the distribution of dark matter in massive clusters of galaxies 25. So far, the team CLASH HAS Completed observations of six of the 25 clusters. Dark Matter Makes up the bulk of the universe's mass, yet it Can Only Be detected by Measuring gravity tugs on how ITS and visible matter warps space like a fun-house mirror so the light from distant That IS lenses distorted. Galaxy clusters like MACS 1206 are perfect laboratories for Studying dark matter's gravitational effects Because They Are The Most massive structures in the universe. Because of Their heft, the clusters act like giant cosmic lenses, magnifying, and bending Distorting That Any light pass through 'em - an effect Known as gravitational lensing. MACS 1206 lies 4.5 billion light-years from Earth. Hubble's keen vision helped CLASH Astronomers uncover multiple images 47 12 Newly Identified of faraway galaxies. Finding So Many multiple images in a cluster Is A unique capability of Hubble, and the survey CLASH IS optimized to find 'em. The new observations build on Earlier work by Hubble and ground-based telescopes. The first era When The clusters Formed PRECISELY IS NOT KNOWN, But Is Estimated To Be at least one billion nine years ago and as far back as Possibly one billion 12 years ago. If MOST of the clusters in the survey are found CLASH To Have Excessively high accumulations of dark matter in Their central cores, then it May yield new clues to the early stages in the origin of structure in the universe. Image Credit: NASA, ESA, M. Postman (STScI), and the CLASH Team
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