Curated OER
Uranus, Neptune, and Pluto
In this planets instructional activity, students read information about Uranus, Neptune, and Pluto and then complete 18 multiple choice, 4 true or false, and 2 fill in the blank questions.
Other
Sky Server: About Astronomy
This site from SkyServer provides the history of astronomy as well as links to mapping the sky, galaxies, cosmic structures and much more. Several pictures are given, and the article is medium in length.
NASA
Nasa: Imagine the Universe: Gamma Ray Bursts
What is a Gamma-ray Burst? Why do scientists study gamma-ray bursts? Find your answers to these questions as well as view additional resources on this topic.