Light Echo Illuminates Dust Around Supergiant Star V838 Monocerotis (V838 Mon). Credit: NASA, N. Walborn and J. Maz-Apellniz (Space Telescope Science Institute, Baltimore, MD), R. Barb (La Plata Observatory, La Plata, Argentina) (NASA Media Archives). Buy this as a superb wall poster, a canvas print or a framed print.