One of the most striking constellations is Cygnus, which really does look like a flying swan. All of these stars are part of our Galaxy, the Milky Way, and all of these stars are in orbit around the center of our Milky Way, as is our sun. We are traveling around the center of our Galaxy as a gravitational captive of our sun. read more
Well those constellations DO move around (in our perspective), just not too much. This is because the earth orbits the sun in a fairly flat plane, therefore the motion along the north-south axis is mostly limited to the "wobble" that gives us our seasons. read more
The answer is that the earth moves in a way that makes it look as if the constellations are moving. It is a case of apparent motion. In the case of the earth and the constellations the earth rotates, with us on it, from west to east. The constellations appear to move from east to west, moving "backwards" from the real rotation of the earth. read more