Harvard University
Royal Astronomical Society: Steady State Theory of an Expanding Universe
In-depth research about the steady-state theory of the expanding universe found within a bibliographic database of astronomical literature. Learn about the theory that asserts that new matter is continuously created as the universe expands.
PBS
Pbs Learning Media: How Big Is the Universe?
In this media-rich essay from the NOVA Web site, astronomer Brent Tully of the University of Hawaii walks you through the latest scientific theories about the size of the universe.
Other
The Expanding Balloon Experiment
Great science experiment to help aide in the understanding of the Big Bang Theory. Students are able to complete this experiment with little materials and individually.
Other
Montana State Univ.: Expanding Universe (Lesson Plan)
This site has a lesson plan in which students gather evidence supporting the Big Bang Theory using a balloon model of the expanding universe.
BBC
Bbc: Origin of the Universe
Try this introduction to ideas about how the universe began and how it might end. Topics include; the big bang and its echoes, antimatter, and inflation/expansion of the universe.
TED Talks
Ted: Ted Ed: What Is the Universe Expanding Into?
Sajan Saini explains the existing theories around the Big Bang and what, if anything, lies beyond our universe.
TED Talks
Ted: Ted Ed: Three Ways the Universe Could End
Do we know how our universe is going to end? Venus Keus explores cosmologists' three possible scenarios.
TED Talks
Ted: Ted Ed: The Beginning of the Universe, for Beginners
How did the universe begin and how is it expanding? CERN physicist Tom Whyntie shows how cosmologists and particle physicists explore these questions by replicating the heat, energy, and activity of the first few seconds of our universe,...
Utah Education Network
Uen: Universe Devlopment What Is the Big Bang?
If you need a model of the big bang theory, then check out this resource. Using just a balloon and a marker, you can create a model of the big bang process.
Khan Academy
Khan Academy: Edwin Hubble
An article about the life of Edwin Hubble. Learn about how he grew up, education, and how he developed his theories of an expanding universe.
American Museum of Natural History
American Museum of Natural History: Profile: Georges Lemaitre
Find out about the life and work of the father of the Big Bang theory, Georges Lemaitre. This article describes the origin of the cosmology theory and its growing acceptance among scientists. This is an excerpt from COSMIC HORIZONS:...