Abstract: As part of this activity, students learn about geologic processes on Earth in order to interpret surface features recently seen on Europa by NASA's Galileo spacecraft. Materials presented here include a vocabulary list, geology jigsaw puzzle, review questions, and links to related sites.
Abstract: The basic principles of Einstein's general theory of relativity. Differential geometry. Experimental tests of general relativity. Black holes. Cosmology.
Abstract: Readers can learn about the latest advancements in X-ray astronomy, and how the newest generation of instruments are making observations of the behavior of light, matter, and space-time in the vicinity of black holes. These observations are then compared to results predicted by Einstein's General Theory of Relativity. Links to a glossary are embedded in the text of the article.
Abstract: This site displays a brief animation of a supernova explosion and presents an explanation of the types and causes of supernovae. Links to a glossary are embedded in the text.