Web 2.0 and Fun Tools
What are the latest and coolest tools out there?
Celestia
The free space simulation that lets you explore our universe in three dimensions. Celestia doesn't confine you to the surface of the Earth. You can travel throughout the solar system, to any of over 100,000 stars, or even beyond the galaxy. The exponential zoom feature lets you explore space across a huge range of scales, from galaxy clusters down to spacecraft only a few meters across. A 'point-and-goto' interface makes it simple to navigate through the universe to the object you want to visit.

Here's a picture of Saturn from th
e gallery: