California Institute of Technology
Spitzer Science Center: Evidence for Comets
Under the heading, "Evidence for Comets Found in Dead Star's Dust" this site examines specific details of an chart/graph which demonstrates the cloud of dust involved in the white dwarf and this cloud's relation to the material...
Cosmos 4 kids
Cosmos4 Kids: Mercury
A look into NASA's exploration of Mercury. Site includes reference material as well as a video about the Apollo Mission.
PBS
Pbs Learning Media: Explore How Light Is Needed to See Things: Interactive Lesson
Explore how light moves and describe how an object in a dark space only becomes visible when light moves into the space and illuminates it. Interactive activities, time-lapse videos, and images are used to enhance student observations as...