Astronomy, a part of physics, is the oldest natural science. In the past it was a part of 'natural philosophy' with other fields of science, such as chemistry and biology. During the scientific revolution, these fields became separate, and physics became a distinct field of knowledge.
ʌ s t ɹ ɑ n ə m i WORD_BOUNDARY ʌ WORD_BOUNDARY p ɑ ɹ t WORD_BOUNDARY ʌ v WORD_BOUNDARY f ɪ z ɪ k s WORD_BOUNDARY ɪ z WORD_BOUNDARY ð ɪ WORD_BOUNDARY oʊ l d ɪ s t WORD_BOUNDARY n æ t̠ʃ ə ɹ ɹ ə l WORD_BOUNDARY s aɪ ə n s WORD_BOUNDARY ɪ n ð ə WORD_BOUNDARY p æ s t WORD_BOUNDARY ɪ t WORD_BOUNDARY w ʌ z ʌ WORD_BOUNDARY p ɑ ɹ t WORD_BOUNDARY ʌ v WORD_BOUNDARY n æ t̠ʃ ə ɹ ɹ ə l WORD_BOUNDARY f ɪ l ɑ s ə f i WORD_BOUNDARY w ɪ ð WORD_BOUNDARY ʌ ð ə ɹ WORD_BOUNDARY f iː l d z WORD_BOUNDARY ʌ v WORD_BOUNDARY s aɪ ə n s WORD_BOUNDARY s ʌ t̠ʃ WORD_BOUNDARY ʌ z WORD_BOUNDARY k ɛ m ɪ s t ɹ i WORD_BOUNDARY æ n d WORD_BOUNDARY b aɪ ɑ l ə d̠ʒ i WORD_BOUNDARY d ʊ ɹ ɹ ɪ ŋ WORD_BOUNDARY ð ə WORD_BOUNDARY s aɪ ə n t ɪ f ɪ k WORD_BOUNDARY ɹ ɛ v ə l uː ʃ ə n WORD_BOUNDARY ð iː z WORD_BOUNDARY f iː l d z WORD_BOUNDARY b ɪ k eɪ m WORD_BOUNDARY s ɛ p ɹ ə t WORD_BOUNDARY æ n d WORD_BOUNDARY f ɪ z ɪ k s WORD_BOUNDARY b ɪ k eɪ m WORD_BOUNDARY ʌ WORD_BOUNDARY d ɪ s t ɪ ŋ k t WORD_BOUNDARY f iː l d WORD_BOUNDARY ʌ v WORD_BOUNDARY n ɑ l ɪ d̠ʒ WORD_BOUNDARY