Elliptical Galaxy, A galaxy having a near-spherical shape; essentially a big bulge composed mostly of old stars and containing little interstellar matter., a tide during the first or third quarters of the moon when there is the least difference between high and low water., Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter), Shortest day and longest night of the year, Spiral Galaxy, A galaxy made up of a disk, spiral arms, and a bulge at its center. The galaxy is composed of a mixture of old and young stars as well as loose interstellar matter, Occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth, An object that orbits a star, is large enough to have become rounded by its own gravity, and has cleared the area of its orbit., A ball of frozen dust and rock that came from the outer solar system; has a tail that glows, Irregular Galaxy, A galaxy whose shape is neither elliptical nor spiral. It is often rich in interstellar matter, gas, and dust., the very darkest part of the moon's shadow, is cone shaped; sunlight is blocked in this area;, An imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates, Occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth, Milky Way Galaxy, The specific galaxy to which the Sun belongs, so named because most of its visible stars appear overhead on a clear, dark night as a milky band of light extending across the sky, Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter), the very darkest part of the moon's shadow, is cone shaped; sunlight is blocked in this area;, A galaxy having a near-spherical shape; essentially a big bulge composed mostly of old stars and containing little interstellar matter., Orion Spur, Minor spiral arm of the Milky Way galaxy. The Solar System (including the Earth) is inside it, An imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates, The day of the year that marks the beginning of spring in the northern hemisphere; day and night are equal in length, A galaxy whose shape is neither elliptical nor spiral. It is often rich in interstellar matter, gas, and dust., Comet, A galaxy made up of a disk, spiral arms, and a bulge at its center. The galaxy is composed of a mixture of old and young stars as well as loose interstellar matter, The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon, A ball of frozen dust and rock that came from the outer solar system; has a tail that glows, An imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates, Meteroid, A small rocky particle that moves through space larger than a grain of dust but smaller than an asteroid, a tide during the first or third quarters of the moon when there is the least difference between high and low water., Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter), A ball of frozen dust and rock that came from the outer solar system; has a tail that glows, Asteroid, A ball of frozen dust and rock that came from the outer solar system; has a tail that glows, Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter), partial shadow, a tide during the first or third quarters of the moon when there is the least difference between high and low water., Meteor, A natural satellite that revolves around a planet., The day of the year that marks the beginning of spring in the northern hemisphere; day and night are equal in length, A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere., a tide during a new or full moon, when high tides become even higher, Meteorite, A meteoroid that passes through the atmosphere and hits Earth's surface., Day with the most hours of sunlight and the fewest hours of darkness, An object that orbits a star, is large enough to have become rounded by its own gravity, and has cleared the area of its orbit., partial shadow, Moon, the very darkest part of the moon's shadow, is cone shaped; sunlight is blocked in this area;, A small rocky particle that moves through space larger than a grain of dust but smaller than an asteroid, A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere., A natural satellite that revolves around a planet., Planet, A galaxy having a near-spherical shape; essentially a big bulge composed mostly of old stars and containing little interstellar matter., An object that orbits a star, is large enough to have become rounded by its own gravity, and has cleared the area of its orbit., a tide during the first or third quarters of the moon when there is the least difference between high and low water., The day of the year that marks the beginning of fall in the Northern hemisphere; day and night are equal in length, Solar Eclipse, A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere., A galaxy made up of a disk, spiral arms, and a bulge at its center. The galaxy is composed of a mixture of old and young stars as well as loose interstellar matter, Occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth, A group of stars that form a pattern in the sky, Lunar Eclipse, The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon, A galaxy made up of a disk, spiral arms, and a bulge at its center. The galaxy is composed of a mixture of old and young stars as well as loose interstellar matter, A small rocky particle that moves through space larger than a grain of dust but smaller than an asteroid, A galaxy whose shape is neither elliptical nor spiral. It is often rich in interstellar matter, gas, and dust., constellation, A group of stars that form a pattern in the sky, A galaxy whose shape is neither elliptical nor spiral. It is often rich in interstellar matter, gas, and dust., A ball of frozen dust and rock that came from the outer solar system; has a tail that glows, A small rocky particle that moves through space larger than a grain of dust but smaller than an asteroid, Penumbra, partial shadow, The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon, A galaxy having a near-spherical shape; essentially a big bulge composed mostly of old stars and containing little interstellar matter., Day with the most hours of sunlight and the fewest hours of darkness, Umbra, the very darkest part of the moon's shadow, is cone shaped; sunlight is blocked in this area;, Occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth, The day of the year that marks the beginning of fall in the Northern hemisphere; day and night are equal in length, Shortest day and longest night of the year, Axis, Day with the most hours of sunlight and the fewest hours of darkness, A meteoroid that passes through the atmosphere and hits Earth's surface., An imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates, A galaxy having a near-spherical shape; essentially a big bulge composed mostly of old stars and containing little interstellar matter., Winter Solstice, Shortest day and longest night of the year, A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere., Minor spiral arm of the Milky Way galaxy. The Solar System (including the Earth) is inside it, A galaxy whose shape is neither elliptical nor spiral. It is often rich in interstellar matter, gas, and dust., Vernal Equinox, Minor spiral arm of the Milky Way galaxy. The Solar System (including the Earth) is inside it, A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere., A galaxy whose shape is neither elliptical nor spiral. It is often rich in interstellar matter, gas, and dust., The day of the year that marks the beginning of spring in the northern hemisphere; day and night are equal in length, Summer Solstice, A ball of frozen dust and rock that came from the outer solar system; has a tail that glows, Day with the most hours of sunlight and the fewest hours of darkness, The day of the year that marks the beginning of fall in the Northern hemisphere; day and night are equal in length, A galaxy having a near-spherical shape; essentially a big bulge composed mostly of old stars and containing little interstellar matter., Autumnal Equinox, The day of the year that marks the beginning of fall in the Northern hemisphere; day and night are equal in length, Shortest day and longest night of the year, A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere., The specific galaxy to which the Sun belongs, so named because most of its visible stars appear overhead on a clear, dark night as a milky band of light extending across the sky, spring tide, The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon, a tide during a new or full moon, when high tides become even higher, A natural satellite that revolves around a planet., the very darkest part of the moon's shadow, is cone shaped; sunlight is blocked in this area;, neap tide, The specific galaxy to which the Sun belongs, so named because most of its visible stars appear overhead on a clear, dark night as a milky band of light extending across the sky, a tide during the first or third quarters of the moon when there is the least difference between high and low water., A ball of frozen dust and rock that came from the outer solar system; has a tail that glows, Occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth.

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