The document discusses several theories about the origins and structure of the universe: 1) It discusses early geocentric theories like the Ptolemaic and Copernican systems, as well as Isaac Newton's law of gravity and Albert Einstein's theory of relativity. 2) It also examines more modern theories like the steady state theory, Big Bang theory, bouncing universe theory, and open/closed/folding universe theories. 3) The author expresses a belief in the Big Bang theory and folding universe theory, doubting theories like the steady state theory and bouncing universe theory due to a lack of evidence or logical inconsistencies.

1. Origins of the Universe Pictures to go along with the writing portion of this proficiency!

3. Ptolemaic system I don’t think this theory is true because the solar system is not set up like this as we see in other pictures. What we think of as the solar system is all planets orbiting around the sun.

4. Copernican system I don’t think this theory is correct because the planets do orbit the sun but the sun is not in the middle of the universe we have no proof of that.

6. Law of gravity I think that this law definitely is true. This law impacts my thoughts on how big the universe is . Due to this law I think that the universe does not have an end yet because if it did then due to this law it would collapse.

8. Theory of relativity I think that this theory is correct because not only do a lot of smart believe it and that a smart person made it popular, it does make a lot of sense of how it is explained in his theory.

9. Steady state theory

10. Steady state theory I don’t believe in this theory because first off most people don’t believe in it anymore and second if there is a source out in space creating more and more space matter we would have probably discovered it already.

12. Big bang theory I believe in this theory because it is the most logical out of the theories and it is the most popular too.

13. Bouncing universe theory C I don’t think that this theory is possible, if there were multiple beginnings and ends in our universe then when would it be? It hasn’t happened for many years because there has been life on Earth for many years.

14. Open, closed, and fold universe theory I think that out of these three theories I believe in the fold theory because for space to be endless or to have an end seems to impossible so the fold theory is a combination of both.