Unexplained phenomenon | UFO

Unexplained phenomenon Google Doodle. Google tweeted out “1.12.12 25.15.21.18 15 1.18.5 2.5.12.15.14.7 20.15 21.19“, a cipher for “all your ‘O’ are belong to us“.And coincidence this tweet with a www.google.com homepage graphic in which a UFO and ‘O’ missing in Google logo.

Is it really a coincidence? Only the Google can answer that what is really Unexplained phenomenon.