EXCLUSIVE: A 20-year solar eclipse planner p. 49 S EPTEMBER 2021
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How DARK MATTER reveals the cosmos NEW RESEARCH
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Inside the Tarantula Nebula p. 24 PLUS Observing peculiar galaxies p. 40
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Vol. 49
The inside scoop on variable stars p. 54
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Issue 9
H-alpha imaging with Canon’s Ra camera p. 44
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