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cosmology |
the study of structure and evolution of the cosmos from beginning to end |
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evolution |
change over time |
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cosmos |
the universe |
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the universe |
the universe is made up of all space (99.9%) and all stuff (billions of galaxies [gas and stars]) |
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astronomy |
the study of the structure and evolution of stars |
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telescopes |
collect and focus light to make faint objects visible to our eyes |
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spectrograph |
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 |
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? |
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 |
