PRESENTATION OUTLINE
Length of moon cycle:
In the present era the median length of the lunar cycle is about 29d 12h 30m, the average (MSM) is slightly more than 29d 12h 44m, the shortest lunations are about 29d 6h 30m, and the longest are about 29d 20h. Thus the length of the synodic month varies over a range spanning about 13h 30m.
The Moon orbits the Earth in the prograde direction and completes one rotation in approximately 27.322 days (a sidereal month). The Earth and Moon orbit about their barycentre (common center of mass), which lies about 4600 km from Earth's center (about three quarters of the Earth's radius).
The gravity of the moon causes the oceans to come out in the direction of the moon. A different tide occurs on the other side. Ocean levels change as the sun, moon, and Earth interact. When they interact, the oceans rise and fall.
The moon is the only extraterrestrial body that has ever been visited by humans.
The first space craft to send back pictures from the moon was Luna 3 (built by the Soviet Union) in October 1959.
The moon has no global magnetic field.
The moon's diameter is about 1/4 the diameter of the Earth. About 49 moons would fit inside the Earth.
When a month has two full moons, the second full moon is called a blue moon. Another definition of a blue moon is the third full moon in any season (quarter of year) containing 4 total full moons.
From Earth, we always see the same side of the moon; the other side is always hidden.
The dark spots we see on the moon that create the image of the man in the moon are actually craters filled with basalt, which is a very dense material.
When Alan Sheppard was on the moon, he hit a golf ball and drove it 2,400 feet, nearly one half a mile.
In a survey conducted in 1988, 13% of those surveyed believed that the moon is made of cheese.
The multi layer space suits worn by the astronauts to the moon weighed 180 pounds on earth, but thirty pounds on the moon due to the lower gravity.
Only one side of the Moon is visible from Earth because the Moon rotates on its axis at the same rate that the Moon orbits the Earth. The same side of the moon is always lit up by the sun.