Across
- 1. A division of the year that is characterized by recurring weather conditions, and determined by both Earth's tilt relative to the sun and Earth's position in its orbit around the sun
- 4. In astronomy, the change in the sunlit area of one celestial body as seen from another celestial body; phases of the moon are caused by the changing positions of Earth, the sun, and the moon.
Down
- 2. An event which the shadow of one celestial body falls on another.
- 3. The path that a body follows as it travels another body in space