South Pole   6, 57

Space Theory    48

Speed of Light in a Vacuum   13

Standard Kilometer    11

Star Vega    5

Stars     9

Starting Point     30

Substitute  41,42

Sun    6

Sunrises     9

T

Temperature Sensations   39

Time Comparison to the Distance Moved    63

Time Pieces    15,64

Traffic Condition    31

Tranverse Wave       44

U

Understanding      42

Units of Distance   10

Universe   5

V

velocity   47, 52

Velocity & Acceleration    46

Vice Versa    46

W

Wave Length    13,44

Waxing & Waning     39

What is Expected of the Discovery       4

Work    47

World     39

Y

Yard   42

Year   10