astronomy - is the study of everything in the universe beyond Earth's atmosphere., Earth - The planet we live on., cosmic - relating to planets, stars, and space, space - the area which contains all things in the universe, temperature - the degree or intensity of heat present in a substance or object, cause - a reason for an action or condition, proof - evidence that something is true, affect - to have an influence on somebody/​something, particle - an extremely small piece of something such as dust, dirt, or sand, pollution - The contamination of air, water, or soil by substances that are harmful to living organisms., global warming - a gradual increase in the earth's temperature generally due to the greenhouse effect caused by increased levels of carbon dioxide, outcome - the result or effect of an action, situation, or event:,

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