Sky & Telescope - June 2021 - 2

CONTENTS

THE ESSENTIAL GUIDE TO ASTRONOMY

June 2021

VOL. 141, NO. 6

FEATURES

12 Alien Comets
Astronomers have detected signs of
icy interlopers around faraway stars.
By Eleni Petrakou

16 Beyond Starlink: The
Satellite Saga Continues

20 The Magellanic Giant
New data and tenacity have
upended our understanding of the
Milky Way's largest companion.
By Nola Taylor Redd

28
OBSERVING
41 June's Sky at a Glance
By Diana Hannikainen

Cover Story:
34 June's Sunrise
Annular Eclipse

COLUMNS / DEPARTMENTS
43

60 Urban Deepscapes
Here's a different approach to
recording deep-sky targets over
natural and urban landscapes.
By Marybeth Kiczenski

ON THE COVER

Binocular Highlight
By Mathew Wedel

44 Planetary Almanac
45

Evenings with the Stars
By Fred Schaaf

46 Sun, Moon & Planets
By Gary Seronik

A fortunate few will enjoy the
ﬁrst solar eclipse viewable from
North America since 2017.
By Joe Rao

48 Celestial Calendar
By Bob King
52 Exploring the Solar System
By Charles Wood
54

PHOTO: COLLEEN PINSKI

Spectrum
By Peter Tyson

From Our Readers

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

News Notes

40 Book Review
By Gerrit Verschuur
70 New Product Showcase
72

Astronomer's Workbench
By Jerry Oltion

First Exposure
By Tony Puerzer

74 Gallery

Going Deep
By Steve Gottlieb

84 Focal Point
By John Besse

ONLINE

FAMOUS ASTRONOMERS
Read the stories of those who have
laid the foundation for modern
astronomy, with a focus on individuals often overlooked.
skyandtelescope.org/famous
Fortuitous shot of the
May 2012 annular
eclipse as the Sun set

66 Omegon's 2.1×42 Wide-Field
Binoculars
By Dennis di Cicco

42 Lunar Almanac & Sky Chart

28 Southerly Planetary Nebulae
We visit a collection of exquisite
celestial bubbles lying at lower
declinations. By Don Ferguson

S&T TEST REPORT

ASTRO TOURISM
Come with us to explore wonders
both on Earth and in the sky (pandemic permitting, of course).
skyandtelescope.org/
astronomy-travel

BUILD COMMUNITY
Help us connect enthusiasts by
adding your club, planetarium, or
observatory to our listings.
skyandtelescope.org/
astronomy-clubs-organizations

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With other companies set to
launch their own satellite ﬂeets,
SpaceX's goodwill is not enough.
By Anthony Mallama & Monica Young

http://www.skyandtelescope.org/astronomy-clubs-organizations http://www.skyandtelescope.org/astronomy-travel http://www.skyandtelescope.org/famous http://www.skyandtelescope.org/astronomy-travel http://www.skyandtelescope.org/astronomy-clubs-organizations http://www.skyandtelescope.org http://www.shopatsky.com

Sky & Telescope - June 2021

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