We know more about the surface of the moon than we do about the bottom of the ocean. See more

Fish that live more than 800 meters below the ocean surface don't have eyes. See more

Due to gravitational effects, you weigh slightly less when the moon is directly overhead. See more

February 1865 is the only month in recorded history not to have a full moon. See more

December 1972, astronaut Eugene Cernan (U.S.) became the last person to set foot on the moon. See more

Astronaut Neil Armstrong first stepped on the moon with his left foot. See more