Terms: Galaxies (14400000), galaxy (41100000), extragalactic (641000), intergalactic (3060000), intragalactic (5270),
Terms: Messier catalog (80100), Messier CCD (94), galaxy catalog (13300), galaxy catalogs (7040), CFHT legacy survey (2630),
Terms: stars (267000000), interstellar matter (115000), evolution of galaxies (138000), intergalactic medium (99700), clusters of galaxies (319000), galaxy morphology (10100), galactic evolution (43100),
Astronomy Plus CCD Images of Galaxies
Terms: spiral galaxies (311000), elliptical galaxies (193000), classifying galaxy (38), dwarf galaxies (132000), disk galaxies (61900), peculiar galaxies (35700), interacting galaxies (70800), Arp galaxies (1150), active galaxies (205000), lenticular galaxies (5380), irregular galaxies (60000), nonmal galaxies (0), quasars (1020000), protogalaxies (9980),
Princeton - The Galaxy Catalog - Zsolt Frei
Arp's Catalog Of Peculiar Galaxies
NSSDC Photo Gallery: Galaxies and Globular Clusters
Chandra :: Photo Album :: Chandra Sky Map
Terms: galactic research (1940), galactic center (352000), Sagittarius A* (66500), Sgr A* (85300), galactic astronomy (50900), galactic physics (650), extra-galactic research (239), galactic astrophysics (2360),
Terms: sky map (207000), Chandra sky map (17), NGC 1637 (2320),
The supermassive black hole in the centre of the Milky Way
Terms: barycentric radial velocity measure (13), astrometric radial velocity (36), Hertzsprung-Russell (83600), gravitational potential of the source (8),