● Moon

  The Moon is Earth's only moon.

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  Type         Moon
  Magnitude    -12.7

  Known as
  Symbol       ☾

  Physical
  Radius       1,738 km, 0.27 of Earth's
  Mass         0.012 of Earth's
  Density      3.34 g/cm3
  Axial tilt   6.7 degrees
  Albedo       0.12, reflects 12% of the light hitting it

  More information about Moon

  The Moon is a quarter of the Earth's width, and it is drifting about
  four centimetres further away every year. That is slow, but it has an
  end point: in roughly 600 million years the Moon will be too small in
  our sky to cover the Sun, and total solar eclipses will stop happening
  altogether. It turns on its own axis in exactly the time it takes to go
  round us, so the same face is always pointed our way. The best time to
  look at it is not when it is full, which is flat and glaring, but a few
  days either side of half, when the sunlight is arriving at a low angle
  along the line dividing day from night and every crater throws a long
  shadow. Its name comes from the same root as month and as measure. The
  moon is the thing you count with, and the same overlap turns up almost
  everywhere: Finnish kuu, Turkish ay, Hebrew ירח yareach and Chinese 月
  yuè all mean both the moon and the month, in four unrelated language
  families.

  History
  First photographed   the far side, Luna 3, 1959
  First visited        Luna 2, 1959
  Missions             Luna          1959-1976
                       Apollo        1968-1972
                       Chang'e       2007-
                       Chandrayaan   2008-

  Etymology
  From                 Old English
  Reading              mona
  Literally            the measurer

  where it is tonight:  skymap.sh/Moon