
Possible galaxy evolution processes

The Hubble tuning fork - classification of galaxies

Central Bulges of Spiral Galaxies- NGC 7537 (Hubble NICMOS and WFPC2 View)

Starry bulges yield secrets to galaxy growth (Hubble NICMOS View)

Heritage montage

Hubble finds twisted gas disk from galaxy collision fueling nearest active black hole

HST image of an old globular star cluster in galaxy M31

NGC 5426/5427

Milky Way/Andromeda collision (artist's impression)

Milky Way/Andromeda collision (artist's impression)

Milky Way/Andromeda collision (artist's impression)

Milky Way/Andromeda collision (artist's impression)