University of Utah
University of Utah: Aspire: Life Cycle of a Star
Experience this impressive interactive website about the life cycle of a star.
NASA
Nasa: Imagine the Universe: White Dwarfs
Brief description of white dwarfs with respect to their position in the life cycle of stars, the density of white dwarfs, the emissions of white dwarfs, and the temperatures associated with them.
University of Texas at Austin
University of Texas: Thunderstorms
You can find out the conditions for a thunderstorm, the life cycle, types, and wall clouds.