Lesser Lion, The - see Leo Minor.

Level, The - see Norma. 

Libra - constellation of the weighing scales.

Light-year - the distance that light travels in one year: approximately 6 trillion miles. 

Lion, The- see Leo. 

Little Horse, The - see Equuleus. 

Lizard, The - see Lacerta. 

Local Mean Time -  the true time of day at the observer’s location as determined by the sun. 

Lupus - constellation of the Wolf. 

Lynx - constellation of the Lynx. 

Lyra - constellation of the Lyre.  A musical instrument similar to a harp. 

M31 - see Great Andromeda Galaxy, The. 

magnitude - the apparent brightness of a star.  The very brightest stars usually have a magnitude of around zero, while a star which is barely visible to the naked eye under excellent conditions is magnitude six. 

Mariner’s Compass, The - see Pyxis.

Mensa - constellation of the Table Mountain. 

Meridian - an imaginary line which starts at the northern horizon, passes through Polaris and the zenith, then ends at the southern horizon. 

Microscopium - constellation of the Microscope. 

The Milky Way - appears as a faint hazy band of light running across the night sky.  It actually consists of billions of stars that make up our home galaxy. 

Monoceros - constellation of the Unicorn. 

Musca - constellation of the Fly.

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