Light Years from Andromeda

If you go outside tonight and gaze up at the moon, you are not seeing the moon as it is, but rather as it was 1.3 seconds ago.  Looking at the stars, the time delay or age of the light is much longer, perhaps hundreds of years.  The light seen from the Andromeda Galaxy, the most distant object in the universe visible with eye alone, would be over 2 million years old.  "Light years from Andromeda" introduces the Planetarium visitor to the enormity of space, the finite speed of light, and the vast time it takes light to travel such distances.

This is a 40 minute presentation.