Other
National Research Foundation: How Far? How Big? How Many?
Using light as our measuring stick in space, science site provides all types of fun facts using light years and seconds as a reference.
Other
The Electronic Sky: Light Year
Electronic Sky site provides users with the definition of a light year as well as a light year conversion table.
Other
An Atlas of the Universe
What does the universe look like? This website offers visitors a collection of images that serve as an "atlas" of our universe. See multiple charts showing the Earth's distance from the Sun and other stars, find helpful terms in a...