Science, Maths & Technology
Introduction to active galaxies
...Technology, The National Aeronautics and Space Administration © NASA/IPAC Extragalactic Database (NED), Jet Propulsion Laboratory, California Institute of Technology, The National Aeronautics and Space Administration Figure 12: NGC 4051 is a member of a class of galaxies known as Seyfert galaxies. In this optical image (at a wavelength of around 440 nm) a false colour...