Answer:1. Theories about the universe's origin include the Big Bang theory and the Creationist theory.
2. The Big Bang theory states that the universe began with a huge explosion. The Creationist theory states that God created the universe.
3. Other theories about the universe's origin include the steady state theory and the inflationary theory.
4. The steady state theory states that the universe has always existed. The inflationary theory states that the universe began with a period of rapid expansion.
5. References:
http://www.universetoday.com/36302/big-bang-theory/
http://www.universetoday.com/36361/creationist-theory/
http://www.universetoday.com/36377/steady-state-theory/
http://www.universetoday.com/36382/inflationary-theory/
Explanation: