skyandtelescope.org
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THE ESSENTIAL GUIDE TO ASTRONOMY
20 YEARS OF SKETCHING:
Hubble’s Variable Nebula
SOLAR SYSTEM:
Weird Tiny Worlds with Moons
Build Your Own
Spectrograph
Page 32
Hunting for
Micrometeorites
Page 14
Imaging Nine
Floors Up
Page 84
MASTER CLASS
One-Shot
Nightscapes
Page 26
FEBRUARY 2020
JOHANNES KEPLER:
Spacefl ight Prophet