The document summarizes and compares the Bubble Theory and the Big Bang Theory of the origins and expansion of the universe. The Bubble Theory proposes that multiple parallel universes exist close together and could have collided, while the Big Bang Theory asserts that all matter was originally confined to a single point that rapidly expanded. The author concludes that the Big Bang Theory provides a more probable explanation since it does not require the existence of parallel universes prior to the expansion of space.

1. By Leah Vetro Alternate Theories of the Universe

2. The Bubble Theory

3. What is the Bubble Theory? The belief of multiple universes existing at once Some believed to be a millimeter apart We could be rubbing against a parallel universe with an infinite number of our universes

4. How it Relates to the Creation of the Universe Scientists believed that two bubbles collided This collision, supporting the big bang theory, forced a mass expansion of space

5. The Big Bang Theory

6. How it Happened All matter was confined to one point It wasn’t an explosion but an expansion of all of the particles which filled the space The universe is continually expanding Before the expansion, there was nothing

7. Which Theory is Correct? The Bubble Theory doesn’t have much to prove that multiple universes exist at once whereas the Big Bang Theory seems more probable and logical. If nothing was before space, two universes, or bubbles, couldn’t have collided. I believe that the expansion from a minute point must explain how the universe is never ending and how it came to be.

8. Bibliography &quot;The Parallel Universe: Does The Multiverse Provide A Theory of Everything?.&quot; Physics . N.p., n.d. Web. 5 Jan. 2010. <http://physics.suite101.com/article. &quot;SPACE-TALK - The Bubble Universe Theory.&quot; Space-Talk : The Forum for Astronomy, Space and related topics. . N.p., n.d. Web. 11 Jan. 2010. <http://www.space-talk.com/ForumE/showthread.php3?threadid=1907>. scientists. &quot; THE BIG BANG .&quot; University of Michigan . N.p., n.d. Web. 11 Jan. 2010. <http://www.umich.edu/~gs265/