The Big Bang theory says that more than 13 billion years ago, the universe came from a single point that was so hot and thick that it was hard to imagine. This point is called a singularity.
Have you ever wondered what was there before our Universe? While scientists are looking for the answer to the most difficult question in history, let’s find out what they’ve come up with so far. In the 20th century, we’ve shed light on this mystery.
All thanks to this man, Edwin Hubble. One day, on Mount Wilson in Southern California, he aimed his telescope at the sky and found out that these random clouds of gas flying everywhere were actually… other galaxies.