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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