Curated OER
Stars and Slopes
Students use the slopes of various curves plotted on log-log graph paper to classify stellar objects as binary stars, supernovae, or active galaxies.The data used in this lesson were obtained from X-ray astronomy satellites.
NASA
Nasa: Imagine the Universe: Welcome to the World of X Ray Astronomy
Site recounts how X-rays were discovered as well as who discovered them. Offers graphics, links to facts on this topic, a quiz, and teacher resources.
NASA
Nasa: Imagine the Universe: Black Holes
Learn what black holes are and the myths that surround them.