OBSERVING: TEST REPORT: Is Red Light Best? BIRTHDAYS: Happy 100th, Margaret Burbidge PAGE 34 PAGE 60 PAGE 66 2 Fine Filters THE ESSENTIAL GUIDE TO ASTRONOMY Moon SPECIAL ISSUE THE Apollo 11's Amazing Discovery 3 Ways to Observe Our Satellite How to Shoot the Moon The Next 5 Years of Exploration How Old Is That Crater? Page 14 Page 22 Page 28 Page 32 Page 52 JULY 2019 skyandtelescope.comhttp://www.skyandtelescope.com