Sky & Telescope - January 2021 - 2

CONTENTS

THE ESSENTIAL GUIDE TO ASTRONOMY

January 2021

VOL. 141, NO. 1

FEATURES

16 Axion Hunters
The search for an almost invisible
and wholly hypothetical elementary
particle is on!
By Benjamin Skuse

22 Winter's Galaxy Groups

48
OBSERVING

34 Looking for Ice in the Dark
Tiny spacecraft are launching to tell
us more about the water ice that
lurks in shadowed craters on the
Moon.
By Christopher Cokinos

Cover Story:
58 Picturing Galaxies
Here are some tips to get the most
out of your galaxy images.
By Adam Block

64 The Schiller Enterprise
The story of one man's attempt to
recast the constellations of mythology with biblical figures
By Michael Mendillo

ON THE COVER

41

January's Sky at a Glance
By Diana Hannikainen

42

Lunar Almanac & Sky Chart

43

Binocular Highlight
By Mathew Wedel

4

Spectrum
By Peter Tyson

44

Planetary Almanac

6

From Our Readers

45

Evenings with the Stars
By Fred Schaaf

7 75, 50 & 25 Years Ago
By Roger W. Sinnott

46

Sun, Moon & Planets
By Gary Seronik

48

Celestial Calendar
By Bob King

52

Exploring the Solar System
By Thomas A. Dobbins

54

Surburban Stargazer
By Ken Hewitt-White

57

Pro-Am Conjunction
By Diana Hannikainen

PHOTO: A DA M BLOCK / M OUN T
LEM M ON SK YCEN TER / U NIV ERSIT Y OF ARIZON A

2

30

SkySafari 6 Pro
By Rod Mollise

COLUMNS / DEPARTMENTS

10

News Notes

15

Cosmic Relief
By David Grinspoon

72

Dome Buyer's Guide

74

Astronomer's Workbench
By Jerry Oltion

76

Gallery

83 Event Calendar
84

Focal Point
By Richard Tresch Fienberg

ONLINE

INTERACTIVE SKY CHART
Find out what the sky looks like for
your time and place. You can also
print the chart as a handout.
skyandtelescope.org/
interactive-sky-chart
Barred spiral galaxy
NGC 1398

S&T TEST REPORT

EXPLORE THE NIGHT BLOG
Follow Contributing Editor Bob King
as he takes readers on an adventure
through the night sky.
skyandtelescope.org/king

ONLINE STORE
Shop our online store for Moon and
planet globes, sky atlases, and
more, all made or chosen by the
staff of Sky & Telescope.
shopatsky.com

SKY & TELESCOPE (ISSN 0037-6604) is published monthly by AAS Sky Publishing, LLC, owned by the American Astronomical Society, 1667 K Street NW, Suite 800, Washington, DC
20006, USA. Phone: 800-253-0245 (customer service/subscriptions), 617-500-6793 (all other calls). Website: skyandtelescope.org. Store website: shopatsky.com. ©2021 AAS Sky
Publishing, LLC. All rights reserved. Periodicals postage paid at Washington, DC, and at additional mailing offices. Canada Post Publications Mail sales agreement #40029823. Canadian
return address: 2744 Edna St., Windsor, ON, Canada N8Y 1V2. Canadian GST Reg. #R128921855. POSTMASTER: Send address changes to Sky & Telescope, PO Box 420235, Palm
Coast, FL 32142-0235. Printed in the USA.

J
Y021082*1 S* KSYK &
Y T&ETLEELSECSOCPOEP E
MAANRUCAHR 2

BOB KING

Head off the beaten path to expand
your January observing list.
By Ted Forte


http://www.skyandtelescope.org/interactive-sky-chart http://www.skyandtelescope.org/king http://www.skyandtelescope.org/interactive-sky-chart http://www.shopatsky.com http://www.skyandtelescope.org http://www.shopatsky.com

Sky & Telescope - January 2021

Table of Contents for the Digital Edition of Sky & Telescope - January 2021

Contents
Sky & Telescope - January 2021 - Cover1
Sky & Telescope - January 2021 - Cover2
Sky & Telescope - January 2021 - 1
Sky & Telescope - January 2021 - Contents
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