Hubble Finds Supernova Companion Star after Two Decades of Searching. Using the Hubble Space Telescope, astronomers have identified the blue helium-burning companion star, seen at the center of the expanding nebula of debris from the supernova.
Hubble view of star-forming region This image from the NASA/ESA Hubble Space Telescope shows Sh or for short. This is a compact star forming region in the constellation Cygnus (The Swan). A newly-formed star called IR is shrouded.