I ran into this tonight doing some general reading and research and I thought that it was such a useful and handy tool that there might be others on 4um who would find this fun, and possibly useful. What the site is, is a series of 3D maps of our stellar neighborhood and expanding outward as far as looking at local universal neighborhood out to a scale of 14 billion light years or the universe as we know it today. It is a lot of fun and easy to use. It also has a good cross indexed glossary for looking up all of the most common astronomic terms used on the website.
Here is a sample:
In December 1995, the Hubble Space Telescope was pointed at a blank area of the sky in Ursa Major for ten days. It produced one of the most famous astronomy pictures of modern times - the Hubble Deep Field Image. A part of it is shown here. Almost every object in this image is a galaxy typically lying 5 to 10 billion light years away. The galaxies revealed here are all shapes and colours, some are young and blue, whereas others are old, red and dusty. The Hubble Space Telescope has also produced two other similar pictures: the Hubble Deep Field South in 1998 and the Hubble Ultra Deep Field in 2004.