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| A piont in earth's orbit around the sun where daylight is either the longest or the shortest amount possible
Winter is the shortest Dec.21
Summer is the longest June 21[image] |
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| A piont in Earth's around the sun where night and days are the same lengnth
Spring is Mar. 21
Fall is Sept.22[image] |
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| A darkening of the moon when it passes through Earths shadow[image] |
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| The rise and the fall of water in the ocean and the seas caused mainly by the gravitional pull of the moon on Earth[image] |
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| system of billions of stars, gases, and dust[image] |
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| brilliant objcts in space that may be powerhouse of developing galaxies |
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| cloud of gas and dust in space[image] |
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| a star that has swelled and glow with a red color[image] |
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| the eplosion of a star releasing huge amounts of light and other energy |
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| an invisible objec in space whose mass and gravitional force is sogreat that not even light can escape |
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| the idea that universe started a huge explosion about 15 billion years ago |
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