Aspects - feed the beast wiki, Obscurus unknown, obscured (not an aspect: this symbol appears only while researching. it indicates that an aspect has been detected, but further research is needed.
Tutorial:getting started (thaumcraft 3) - feed the beast wiki, This tutorial will teach you the basics of the wondrous thaumcraft 3 mod. iume that you've already installed thaumcraft and know how to manage a survival world..
List of aspects (thaumcraft 3) - feed the beast wiki, The list of aspects shows all the aspects currently available in thaumcraft 3 as well as items that contain them. the list will contain doubles of items since one.