Suppose You Use The Southern Cross To Determi...
Latitude 40 Degrees South-The Altitude Of The...
Suppose You Are Facing North And You See The ...
To The Right Of Polaris; That Is, 90 Degrees ...
In Any Particular Place On Earth, Certain Con...
Our Evening View Of Space Depends On Where Ea...
The Sun's Path, As Viewed From The Equator, I...
The Spring And Fall Equinoxes-at The Equator,...