    It is 4.5 billion years old.
    There is no atmosphere, no twilight & no sound on the Moon.
    The Moon is in synchronous rotation with Earth meaning the same side is always facing the
     Earth.
    The first unmanned spacecraft to reach the Moon was Luna 1 in 1959.
    The first manned Moon landing was on July 20th, 1969 during the Apollo 11 Mission.
    Moonlight is sunlight reflected off of the moon.
Structure of Moon
                                         SOME IMPORTANT FACTS
Distance from earth                                        3,82,200 km
Diameter                                                   3,475 km
Mass                                                       7.3477 × 1022 kg (0.012300 Earths)
Average orbital speed                                      1.022 km/s
Composition                                                Ar, He, Na, K, H, Rn
Circumference                                              10,921 km (equatorial)
Apogee (Farthest distance between earth and moon)          405,503 km
Perigee (Nearest distance between earth and moon)          363,295 km
Time taken by Moon light to reach earth                    1.3 sec
Ratio of Moon mass and Earth mass                          1 : 8.1
Ratio of gravitational pull of Moon and earth              1:6
Ratio of Moon size and Earth size                          1:4
Part of Moon not visible from earth                        41%
Revolution period around earth                             27 days, 7 hrs, 43 min, and 11.47 sec.
Rotation period                                            27 days, 7 hrs, 43 min and 11.47 sec.
Highest Mountain                                           35,000 ft (Leibnitz mts)
Rotation speed                                             3,680 Kmph
Speed of revolution around earth                           3,680 Kmph
THE EARTH
                                                       662