Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Uploaded on Apr 14, 2009
This animation shows (in an exaggerated fashion) the effects that the Earth's orbital motion around the Sun has on apparent star position. Notice how some stars appear to shift out of position as our vantage point changes along Earth's orbit.
This clip is also an experiment with the High Def format at YouTube.