Transcription of Galaxies through Space and Time
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Galaxies through Space and Time2 ContentsINTRODUCTION 4 About the Hubble Space Telescope 5 Our Understanding of Galaxies : A Timeline 7 CHAPTER 1: Our Galactic Neighborhood 10 Seeking the Source of Falling Gas ..12 Studying Ancient Stars in the Milky Way ..14 Tracing the Origin of an Intergalactic Cloud ..16 Surveying Star Clusters in the Andromeda Galaxy ..17 Measuring a Giant Halo around the Andromeda Galaxy ..19 CHAPTER 2: Intriguing Galaxies across the Universe 20 Excavating a Prehistoric Galaxy in Our Cosmic Backyard.
in the history of astronomy. Hubble observes the universe from Earth orbit, just outside our planet’s atmosphere. Credit: NASA As NASA’s first Great Observatory and the first major optical telescope in space, Hubble ushered in a new era of precision astronomy. The heart of the telescope is its 94.5-inch-diameter primary mirror. It is the ...
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