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9 Cards in this Set
- Front
- Back
cosmology
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the study of structure and evolution of the cosmos from beginning to end
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evolution
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change over time
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cosmos
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the universe
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the universe
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the universe is made up of all space (99.9%) and all stuff (billions of galaxies [gas and stars])
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astronomy
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the study of the structure and evolution of stars
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telescopes
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collect and focus light to make faint objects visible to our eyes
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spectrograph
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computer attachments to telescopes that may analyze light. they can determine the chemical composition of stars as well as their mass, temperature, and velocities
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light years
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used for distance; 9.46x10^12 km distance that light will travel over the course of a year at a speed of 300,000 m/s
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what is the Big Bang Theory?
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the current and best working explanation of Universal origin; developed in 1920s, it has stood the test of time with 3 main sources of proof
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