“There are at least as many galaxies in our observable Universe as there are stars in our galaxy.”
Lord Rees of Ludlow
This module presents an overview of the islands of stars found throughout the Universe: the galaxies. Like many objects we have discovered, galaxies vary in characteristics such as size, shape, and age.
Upon completion of this module, the student will be able to:Upon completion of this module, the student will be able to:
- Define what a galaxy is and the broad characteristics of galaxies, including galaxy types.
- Explain the history of observing galaxies.
- Recognize Hubble’s Law and its implications in astronomy.
- Differentiate among galaxy-related objects, including Quasars, Blazars, galactic grouping, WIMPs, gravitational lensing