Axis, The imaginary line Earth spins around., Orbit, The path one object takes around another., Tilt, The angle of Earth's axis, causing seasons., Rotation, When Earth spins on its axis., Solstice, The longest or shortest day of the year., Equinox, Day and night are the same length., Season, Changes in weather patterns during the year., Day, Time when a place faces the Sun., Night, Time when a place faces away from the Sun., Moon, Earth's natural satellite., Phase, The shape of the lit part of the Moon., New Moon, The Moon is not visible., Full Moon, The whole Moon is visible., Eclipse, One object blocks light from another., Solar, Related to the Sun., Lunar, Related to the Moon., Umbra, The darkest part of a shadow where all light is blocked., Penumbra, The lighter part of a shadow where only some light is blocked., Shadow, A dark area where light is blocked., Year, A period of 365.25 days

Space terms

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