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Message: <blockquote data-quote="Athanatophobos" data-source="post: 2258719" data-attributes="member: 742787">Hello, I have a little quiz about the astronomy and the universe for you. You'll just say that's is true or false. Good luck !1- The Big Bang is the beginning of the universe.2- The Big Bang was a great explosion.3- Can we see the Big Bang today ?4- The observable universe has a diameter of 13,7 billion light-years.5- 95 % of our universe is unknown.6- The galaxies can spread out with a speed larger than c.7- The Milky Way and the Andromeda Galaxy will merge.8- The Sun is an average star.9- On Moon, we can see the Great Wall of China.10- The Moon is the largest satellite of our Solar System.</blockquote>