The theory explains how the universe formed from an explosion of matter and energy.

The big bang theory is the correct answer, although, I believe that there is a giant comet that flies by earth once every coupl million years, it is the home of many aliens and is why we can find alien technology in ancient civilizations and how thet suddenly disappeared. Hope it helps! If you like my theory leave a thanks! #Brainiac

hello my name is kailey,

i think the answer is false i   hope this