According to Dr. Schmoll, the Earth's magnetic field has a north and south pole, just like any magnet. The sun does as well. Dr. Schmoll says that science is still figuring out the specifics, but in ...

As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

They occur when the Earth's axis is tilted neither toward nor away from the sun, resulting in a nearly equal amount of day and night across ... When is summer over? Autumn approaches.