26 The Universe
Chapter 26: Stars and Galaxies
Objectives
Sect 1: Observing the Universe
Describe a constellation as a pattern of stars.
Compare and contrast types of optical telescopes.
Distinguish between a radio telescope and an optical one.
Sect 2: Evolution of Stars
Explain how stars form.
Classify the stages of stellar evolution by interpreting the Hertzsprung-Russel (H-R) diagram.
Describe how the sun works and how it will evolve.
Sect 3: Galaxies & the Milky Way
Explain that the same natural laws that apply in the Milky Way Galaxy also apply in other galaxies.
Compare the three main types of galaxies.
Describe the Milky Way galaxy and the Sun's position in it.
Sect 4: Cosmology
Distinguish between the different theories about the origin of the universe.
Define dark matter.
Explain why scientists hypothesize the existence of dark energy.