Even though the Sun and Moon are such familiar objects in the night sky, many children and adults alike struggle to explain...

Physics Narrative 11-14

The cycle of day and night is caused by the rotation of the Earth as it spins on its axis once every 24 hours. Because of this...

Physics Narrative 11-14

Although the Earth spinning explanation is relatively straightforward, justifying it is not so simple. The common-sense notion...

Physics Narrative 11-14

The important point about the photographic evidence provided by a camera pointed at the Pole star is that we cannot decide...

Physics Narrative 11-14

A total eclipse of the Sun, a solar eclipse, is caused by the Moon passing between the Sun and the Earth.

Physics Narrative 11-14

Lunar eclipses occur when the Earth comes between the Sun and the Moon so that the Earth casts its shadow on the Moon. As the...

Physics Narrative 11-14

The reasons for the seasons, for phases, and for day and night all depend on models that are three-dimensional. To account for...

Physics Narrative 11-14

Physics Narrative 14-16