Starry bulges yield secrets to galaxy growth
Astronomers have combined information from the ESA/NASA Hubble Space Telescope's visible- and infrared-light cameras to show the hearts of four spiral galaxies peppered with ancient populations of stars.
Complete caption at: http://sci.esa.int/hubble/bulgesb.txt
Credits for WFPC2 and NICMOS composites: ESA, NASA and Reynier Peletier (University of Nottingham, United Kingdom)
Last Update: 1 September 2019