Exoplanets
This section of the site deals with what we know about extra-solar planets (known by the shorthand "exoplanets").
The first page, "Finding Exoplanets," explains the various methods used to discover exoplanets and learn about them.
"What's Known" discusses the general characteristics about the known exoplanets.
The third page, "Future Missions & Exploration," deals with space-based missions for finding exoplanets.