Why Some Days Aren’t 24 Hours

In the future, aliens contact Earth but struggle to understand the concept of a day. Initially, a day is explained as Earth's rotation, leading to confusion with stellar days. A solar day is then described, highlighting its variability due to Earth's orbit and axial tilt. Finally, a standard 24-hour day is defined using cesium atom oscillations. An interactive video is recommended for further exploration of these concepts.

What new insight or understanding did you gain from this video?

Evaluate responses using AI:

OFF