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9 Cards in this Set

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