latitude - the distance north or south of the Equator, Northern Hemisphere - the area of Earth between theEquator and the North Pole , Southern Hemisphere - the area of Earth between the Equator and the South Pole, astronomer - a scientist who studies space, the planets, and stars, galaxy - a large group of stars and their solar systems  , Milky Way - the galaxy that contains Earth, our sun, And all of its solar systems, sextant - an instrument for measuring latitude  , orbit - the path an object takes to travel around another object, telescope - a device for viewing distant objects using light rays with mirrors or lenses, sundial - an instrument to show the time of day By casting a shadow l,

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