I use to (and still do) believe that somewhere in the universe there is another planet exactly like ours and if we ever made an expedition there we would think that we went in a big circle because the person that looked just like us would have taken an expedition back to earth so no one would notice that we were still gone.
A childhood belief about outer space

others believed things like this
- I used to think that planet earth was the only thing that existed in the universe— Santiago
- I used to believe that human lived inside the planet earth and not on its surface.— Giancarlo
- Until I was about 8 I believed that your back teeth keep growing in until you have a full circle of teeth.Anon
- When I looked up in the sky and could see the clouds moving I used to think that it was the earth spinning.— JOhn
- My mom said she had eyes in the back of her head. I looked and looked, but never found them.Anon
- I used to believe that there was a person in the mirror who looked exactly like meAnon