The nature of electromagnetic waves (radio waves— the longest, to gamma rays, the shortest) has provided a useful tool to determine the movement of objects in the Universe. Because light from almost all distant galaxies has longer wavelengths that comparable light here on earth, astronomers believe the whole Universe is continuing to expand. Mathematical models are used to study evidence from many sources to explain events in the Universe. A variety of increasingly sophisticated technology is used to learn about the Universe (e.g., visual telescopes, radio telescopes, X-ray telescopes, computers, space probes, atomic accelerators.
- Earth/Space Science
- The universe, earth and all earth systems have undergone change in the past, continue to change in the present and are predicted to continue changing in the future.
Students demonstrate their understanding of Processes and Change over Time within Systems of the Universe by