Dear Tom, I know the meaning of the “Tropic of Cancer,” but how did the term originate? — Sam Johnston Dear Sam, The Tropic of Cancer, north of the equator at 23 degrees 27 minute… ...

The Tropic of Cancer – also called the Northern Tropic – is the most northern circle of latitude on Earth where the sun can appear directly overhead at noon. It occurs at approximately 23.5 ...

What causes the June solstice? Earth’s axis of rotation is tilted by 23.5 degrees with respect to the plane it orbits around the sun. This is why we have seasons – during summer in the ...