Exif II* x N 1 . Adobe Photoshop CS6 (Macintosh) The NASA/ESA Hubble Space Telescope and NASA’s Spitzer Space Telescope completed deep imaging of the galaxy cluster Abell 2744 (above left) and a nearby "blank" field (above right), as part of the Frontier Fields programme. Frontier Fields is an ambitious observing programme scanning six different galaxy clusters, including Abell 2744, and studying their lensing effects. http://ns.adobe.com/xap/1.0/ 3957.0 1660.0 D.5.5.3 Frontier Fields: Abell 2744 and “blank” field comparison The NASA/ESA Hubble Space Telescope and NASA’s Spitzer Space Telescope completed deep imaging of the galaxy cluster Abell 2744 (above left) and a nearby "blank" field (above right), as part of the Frontier Fields programme. Frontier Fields is an ambitious observing programme scanning six different galaxy clusters, including Abell 2744, and studying their lensing effects. Abell 2744 Creative Commons Attribution 4.0 International License HPhotoshop 3.0 8BIM Z %G