The nebula acts as a source of radiation for studying celestial bodies between it and us. In the 1950s and 1960s, the Sun's corona was mapped from observations of the Crab's radio waves passing through it, and in 2003, the thickness of the atmosphere of Saturn's moon Titan was measured as it blocked out X-rays from the nebula.
ð ə WORD_BOUNDARY n ɛ b j ʊ l ə WORD_BOUNDARY æ k t s WORD_BOUNDARY æ z WORD_BOUNDARY ʌ WORD_BOUNDARY s ɔ ɹ s WORD_BOUNDARY ʌ v WORD_BOUNDARY ɹ eɪ d ɪ eɪ ʃ ə n WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY s t ʌ d i ɪ ŋ WORD_BOUNDARY s ə l ɛ s t j ə l WORD_BOUNDARY b ɑ d i z WORD_BOUNDARY b ɪ t w iː n WORD_BOUNDARY ɪ t WORD_BOUNDARY æ n d WORD_BOUNDARY ʌ s WORD_BOUNDARY ɪ n ð ə WORD_BOUNDARY n aɪ n t iː n h ʌ n d ɹ ɪ d WORD_BOUNDARY f ɪ f t i WORD_BOUNDARY z WORD_BOUNDARY æ n d WORD_BOUNDARY n aɪ n t iː n h ʌ n d ɹ ɪ d WORD_BOUNDARY s ɪ k s t i WORD_BOUNDARY z WORD_BOUNDARY ð ə WORD_BOUNDARY s ʌ n z WORD_BOUNDARY k ɔ ɹ oʊ n ə WORD_BOUNDARY w ʌ z WORD_BOUNDARY m æ p t WORD_BOUNDARY f ɹ ʌ m WORD_BOUNDARY ɑ b z ə ɹ v eɪ ʃ ə n z WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY k ɹ æ b z WORD_BOUNDARY ɹ eɪ d ɪ oʊ WORD_BOUNDARY w eɪ v z WORD_BOUNDARY p æ s ɪ ŋ WORD_BOUNDARY θ ɹ uː WORD_BOUNDARY ɪ t WORD_BOUNDARY æ n d WORD_BOUNDARY ɪ n WORD_BOUNDARY t uː WORD_BOUNDARY θ aʊ z ə n d WORD_BOUNDARY θ ɹ iː WORD_BOUNDARY ð ə WORD_BOUNDARY θ ɪ k n ə s WORD_BOUNDARY ʌ v ð ɪ WORD_BOUNDARY æ t m ə s f ɪ ɹ WORD_BOUNDARY ʌ v WORD_BOUNDARY s æ t ɜː n z WORD_BOUNDARY m uː n WORD_BOUNDARY t aɪ t ə n WORD_BOUNDARY w ʌ z WORD_BOUNDARY m ɛ ʒ ə ɹ d WORD_BOUNDARY æ z WORD_BOUNDARY ɪ t WORD_BOUNDARY b l ɑ k t WORD_BOUNDARY aʊ t WORD_BOUNDARY ɛ k s ɹ eɪ z WORD_BOUNDARY f ɹ ʌ m ð ə WORD_BOUNDARY n ɛ b j ʊ l ə WORD_BOUNDARY