天文學(英语:astronomy),是觀察搭研究宇宙裏向天體個學問,俚研究天體(包括衛星、行星、恆星、星雲搭銀河系等)個分布、運動、位置、狀態、結構、組成、性質搭仔起源演化,也研究一點勒地球大氣層外頭個現象,譬方超新星、伽馬射線暴搭宇宙微波背景輻射等等,是自然科學裏向個一門基礎學科。宇宙學搭天文学有點搭界,弗一樣個場化是拿宇宙看成功一隻整體來研究。
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