The expression "Tying the Knot" comes from an old Roman custom where the brides clothes were tied up all in knots and the groom was supposed to untie the knots.

There are mirrors on the moon. Astronauts left them so that laser beams could be bounced off of them from Earth. These beams help give us the distance to the moon give or take a few metres.

The eyes of the chameleon can move independently. It can see in two different directions at the same time.

AMAZING FACTS