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In recent years an enormous amount of cosmological data has come from well known projects such as the Hubble Space Telescope (HST) and the Cosmic Background Explorer (COBE). This book explains and makes sense of this vast array of new observational data in terms of its impact on current cosmological models. With new theories and a plethora of data feeding cosmology in the 1990s, Gregory Bothun sets about the task of re- assessing our cosmological models. He outlines exactly what the latest observations are, and how they should be seen as either consistent or in conflict with current...

This module challenges you to answer the question "What is in a star?" Over the period of 2-3 weeks, you will view images of stars and investigate the properties of stars and starlight. You will explore connections between the temperature and color of a star, and the radiation it emits. You will closely examine the link between starlight and what this tells you about a star's structure and composition. We emphasize an understanding of atomic structure and processes such as absorption and emission of radiation by atoms by asking you to use this chemistry to answer questions about the nature of...