f t7rfyh

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EXCLUSIVE: A 20-year solar eclipse planner p. 49 S EPTEMBER 2021

The world’s best-selling astronomy magazine

How DARK MATTER reveals the cosmos NEW RESEARCH

p. 16

Inside the Tarantula Nebula p. 24 PLUS Observing peculiar galaxies p. 40

www.Astronomy.com $6.99

09

Vol. 49

The inside scoop on variable stars p. 54

Issue 9

H-alpha imaging with Canon’s Ra camera p. 44

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74820 01096

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