[1] Hubble, NASA, and the Europeans Space Agency
[2] NASA, ESA, M. Robberto (Space Telescope Science Institute/ESA), the Hubble Space Telescope Orion Treasury Project Team and L. Ricci (ESO)
[3] ESO/WFI (Optical); MPIfR/ESO/APEX/A.Weiss et al. (Submillimetre); NASA/CXC/CfA/R.Kraft et al. (X-ray)
[4] Event Horizon Telescope Collaboration
[5] Advanced Visualization Laboratory NCSA at University of Illinois Urbana-Champaign and NASA
[6] Millenium Simulation Project, Springel et al. (2005)
[7] NASA image by Robert Simmon and Marit Jentoft-Nilsen, based on MODIS data.