1001 Space The Universe Mysteries of Space Galaxies Stars Planets and Moons Space Exploration Space Travel Earth Nature History Human World Science and Technology

Galaxies What does a radio telescope do? Who first proved there were other galaxies in the universe? What lies in between the galaxies? How many galaxies are there? Which is the nearest galaxy? Why are radio maps useful? How big is the Milky Way? What is the Milky Way? Where did the galaxies come from? What shapes are the galaxies? What is a nebula? Can other galaxies be seen in the sky? What is a galaxy?   Previous: Back to Galaxies Book: 1001 Section: Space Chapter: Galaxies