Sky & Telescope - December 2022 - 2

CONTENTS
December 2022
THE ESSENTIAL GUIDE TO ASTRONOMY
FEATURES
12 Unmasked
The first image of our galaxy's
central black hole gives us a peek at
a bizarre object.
By Camille M. Carlisle
20 Cassiopeia's Planetary
Nebulae
The celestial queen holds a
pleasing selection of planetary
nebulae. Enjoy them on these winter
nights. By Scott Harrington
Cover Story:
28 The First White Dwarf
The road to discovering a new type
of star was long and winding.
By Ken Croswell
34 A Flare for the Dramatic
What does stars' tempestuous
activity mean for their planets'
habitability? By Arwen Rimmer
60 Illuminating Echoes of Light
Here's how to reveal the reflected
light of stellar explosions photographically.
By
Rolf Wahl Olsen
S&T TEST REPORT
64 Celestron's 10-inch
StarSense Explorer
By Johnny Horne
ON THE COVER
ONLINE
E-NEWSLETTERS
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products.
skyandtelescope.org/newsletter
Three stars make up
40 Eridani, all smaller
than the Sun.
CASEY REED
2
EXPLORE THE NIGHT BLOG
Follow Contributing Editor Bob King
as he takes readers on an adventure
through the night sky.
skyandtelescope.org/king
DIGITAL EDITION
Use the email connected to
your subscription to read
our latest digital edition.
skyandtelescope.org/
digital
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DECEMBER 2022 * SKY & TELESCOPE
MARCH 2018 * SKY & TELESCOPE
54
OBSERVING
41 December's Sky at a Glance
By Diana Hannikainen
42 Lunar Almanac & Sky Chart
43 Binocular Highlight
By Mathew Wedel
44 Planetary Almanac
45 Evenings with the Stars
By Fred Schaaf
46 Sun, Moon & Planets
By Gary Seronik
48 Celestial Calendar
By Bob King
52 Exploring the Solar System
By Charles A. Wood
54 First Exposure
By Tony Puerzer
57 Going Deep
By Mel Bartels
COLUMNS / DEPARTMENTS
4 Spectrum
By Peter Tyson
6 From Our Readers
7 75, 50 & 25 Years Ago
By Roger W. Sinnott
8 News Notes
68 New Product Showcase
70 Book Review
By Peter Tyson
72 Astronomer's Workbench
By Jerry Oltion
74 Beginner's Space
By Gary Seronik
76 Gallery
84 Focal Point
By Mark Westmoquette
VOL. 144, NO. 6
TONY PUERZER

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Sky & Telescope - December 2022

Table of Contents for the Digital Edition of Sky & Telescope - December 2022