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TEST: ASTRONOMY questions and answers rated A+ 2025/2026
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    TEST: ASTRONOMY questions and answers rated A+ 2025/2026

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Astronomy final exam study guide questions and answers rated A+ 2025/2026
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    Astronomy final exam study guide questions and answers rated A+ 2025/2026

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Astronomy Exam #1 questions and answers rated A+ 2025/2026
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Ethics In Technology DSST questions and answers rated A+ 2025/2026
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Environmental Science DSST questions and answers rated A+ 2025/2026
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DSST Astronomy - Deck 1 questions and answers rated A+ 2025/2026
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Astronomy DSST History questions and answers rated A+ 2025/2026
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Astronomy DSST Free Clep Study Guide questions and answers rated A+ 2025/2026
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    Astronomy DSST Free Clep Study Guide questions and answers rated A+ 2025/2026

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Astronomy DSST Test Review questions and answers rated A+ 2025/2026
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Astronomy DSST questions and answers rated A+ 2025/2026
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    Astronomy DSST questions and answers rated A+ 2025/2026

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DSST Astronomy Test Prep Questions and Answers
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    DSST Astronomy Test Prep Questions and Answers

  • terrestrial planet (rocky planet) a planet with a solid surface, that is mainly composed of rock and solid materials gaseous planet (gas giants) a planet that has little to no solid surface and is mostly composed of gases dwarf planet a planet that is too small to be considered a full planet light-year the distance that light travels in one year, roughly 6 trillion miles or 63,000 AU parsec a unit of measurement in astronomy, equals to about 206,000 AU or 3.2 light-years magnitude a measure...
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DSST Astronomy Review Questions and Answers
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    DSST Astronomy Review Questions and Answers

  • Astronomy the study of everything in the universe, from all the celestial bodies to space itself; greek for "law of the stars" (astron = star; nomos = law) Sun the star at the center of the Solar System, 27 million degrees at core, 99.8 % of mass in SS Nuclear Fusion Hydrogen atoms fuse together to make Helium (happens in core of Sun) Solar System the gravitationally bound system comprising the Sun and the objects that orbit it, either directly or indirectly Mercury the smallest and innerm...
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DSST Astronomy - Deck 1 Practice Questions and Answers
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    DSST Astronomy - Deck 1 Practice Questions and Answers

  • Parallax An apparent shift in a star's position relative to the stars around it. This perceived shift is caused by motion on Earth's surface as it rotates around the sun. Scientific Method An ordered process for discovering new knowledge that relies on observation, explanation, prediction, and experimentation. Occam's Razor A problem-solving principle that says the simplest solution to a problem is most likely to be correct. Theory A testable prediction based on real-world observations. P...
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Astronomy DSST Test Review Questions and Answers
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  • In the development of _______________ thought, certain original and imaginative individuals began to make systematic observations of celestial objects to formulate theories and explain their behavior. Astronomical The _______________ must call upon all his resources of ingenuity and employ more clever devises than the most astute detective to solve the problems of his business. Astronomer The first significant development of astronomy as a science took place in ancient _____________. Greece T...
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Astronomy DSST Study Questions and Answers
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  • Planets Small, non luminous bodies that shine by reflected light. Star A self-luminous ball of hot gas that generates its own energy. Sun 109 x5 larger than Earth. AU Distance from the Earth to the Sun. Astronomical Unit (AU) 1.5 x 10"m Light year Distance light travels in a year. 63,000 AU (10[13]km) Galaxy Cloud of stars, gas and dust and bound by gravity of all the matter. Can range from 1500, to 300,000 light years and can contain over 100 billion stars. Milky Way 75,000 light years ...
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Astronomy DSST Practice Test Questions and Answers
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    Astronomy DSST Practice Test Questions and Answers

  • Quasar Short for "quasi-stellar radio source," a bright, point-like object that produces the luminosity of 100 to 1,000 galaxies within a region the size of a solar system. Pulsar A rapidly rotating neutron star which emits radiation in magnetic pulses. Redshift A shift in the lines of an object's spectrum toward the red end. It indicates that an object is moving away from the observer. The larger it is, the faster the object is moving. Asterism A cluster of stars (or a small constellation...
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Astronomy DSST Practice Questions and Answers
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    Astronomy DSST Practice Questions and Answers

  • heliocentric theory places the sun at the CENTER of the solar system, states that all other bodies in the solar system orbit it. This was in direct contradiction to Ptolemy's geocentric theory, that stated the earth was the center of the universe Nicolaus Copernicus widely credited as the father of the heliocentric theory (sun is the center of the universe) he was not the first to propose the concept but his mathematical model was the first that correctly predicted the movement of the planets....
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Astronomy DSST History Exam Questions and Answers
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    Astronomy DSST History Exam Questions and Answers

  • Geocentric the model of the solar system that the Greeks believed in, where the Earth was at its center.All of the plantes in the solar system revolved around the Earth. Heliocentric the model of the solar system where the Earth and other planets revolve around the sun Aristotle The Greek astronomer who believed that the universe was finite and dome shaped. Ptolemy, Cladius The Greek astronomber who believed the planets moved in orbits (little circles on bigger circles). He based his study of...
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Astronomy DSST Free Study Guide with Questions and Answers
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    Astronomy DSST Free Study Guide with Questions and Answers

  • Heliocentric Theory Places the sun at the center of the solar system, stating that ll other bodies in the solar system orbit it. This was in direct contradiction to Ptolemy's geocentric theory, which stated Earth was the center of the Universe. Geocentric Theory Earth is the center of the Universe Nicolaus Copernicus Widely credited as the father of the heliocentric theory. Although he was not the first to propose the concept, his was the first mathematical model which correctly predicted the...
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