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The Sun-Earth-Moon Systems

Across
large, dark, basaltic plains on Earth's Moon
the time taken by a celestial body to make a complete round in its orbit.
each of the aspects of the moon, according to the amount of its illumination
The spin of planet Earth around its own axis
Most planets have a ________________ rotation except for Venus.
the result of the moon exerting its gravitational force on the ocean and bulging it both toward and away from the moon.
an event that occurs when the Sun appears to reach its most northerly or southerly excursion relative to the celestial equator on the celestial sphere.
a half-shadow that occurs when a light source is only partly covered by an object
Down
describes the circular motion of an object around its center.
The period when the moon appears to grow growing
the dark center portion of a shadow
occurs when the Moon passes between Earth and the Sun, thereby obscuring Earth's view of the Sun, totally or partially.
Earth comes between the Sun and the Moon, blocking the sunlight falling on the Moon
a regular, repeating path that one object in space takes around another one.
able to be seen or understood:
a low energy phase and as the moon moves through its last crescent
is a moment in time when the Sun crosses the Earth's equator, which is to say, appears directly above the equator