Homework Activity 1

SPIRAL

EXPANDING UNIVERSE

ELLIPTICAL

GRADUAL GROWTH

RAM PRESSURE STRIPPING

TIDAL INTERACTIONS

LENTICULAR

GALACTIC CANNIBALISM

DOPPLER EFFECT

ΛCDM MODEL

SMALL GALAXY MERGERS

WAVELENGTH STRETCHING

DARK MATTER HALOS

MAJOR MERGERS

IRREGULAR

DISTANT GALAXIES