» Space & Exploration - Galaxy
  • Galaxy - Wikipedia, the free encyclopedia
  • Introduction to active galaxies - LearningSpace - OpenLearn - The Open University - The field of active galaxies is recognized as one of increasing importance. But how do we know there are different kinds of galaxy? What are active galaxies? How are they powered? This unit examines the different types of active galaxy and looks at the crucial role of the active galactic nucleus and the energy source at its heart
  • Galaxy Zoo - the project which harnesses the power of the internet - and your brain - to classify a million galaxies
  • Space.com explains galaxies, colliding galaxies, cluster of galaxies, pictures galaxies and science astronomy galaxies
  • Galaxies - Lecture notes by Nick Strobel on the structure of the Milky Way and characteristics of other galaxies for an introductory astronomy course
  • Galaxies - The universe - Astronomy fact files - Astronomy & time - Explore online
  • Astronomy.com - Colliding galaxies reveal colossal black holes were common in early universe