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the universe
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Large clouds of dust and gas—called nebulae—lurk between the
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Scale of the Universe
The Universe: Galaxies, Stars, and Nebulae
Chapter 16
A Universe of Galaxies
Chapter 21 Vocabulary PowerPoint Presentation
20.2 The Milky Way and Other Galaxies
Globular Clusters as Fossils of Galaxy Formation
Epicycles… the short form. For lurid details, see [CO pp.1018-1030] φ
Lecture 8 - University of Sydney
astronomy 161 - OSU Astronomy
Chapter 15 and 16: Discovering Galaxies
emission-weighted temperature X-ray surface brightness Star
Physics Oration - Part 2
The Galactic Centre: a hidden treasure
The Doppler Effect
